{"product_id":"water-ball","title":"Khaos® Water Ball – Unstable Water Resistance for Core Strength, Rotational Power \u0026 Stability","description":"\u003cp class=\"oates-pdp__lede\" style=\"font-size:1.25rem;line-height:1.5;color:#990033;font-weight:600;margin:0 0 1rem;\"\u003eA water-and-air-filled training sphere that makes every rep feel different — training the hips, trunk, and shoulders to brace against forces a fixed weight never creates.\u003c\/p\u003e\n \n\u003cp class=\"oates-pdp__short\"\u003eThe \u003cstrong\u003eKhaos® Water Ball\u003c\/strong\u003e is a heavy-duty, water-and-air-filled training sphere that uses internal fluid displacement to create an unpredictable load for full-body strength and trunk control work. By replacing a fixed center of mass with one that constantly moves, it teaches the hips, torso, and shoulders to brace against sudden changes in momentum during sport-specific carries, squats, and rotational movement patterns.\u003c\/p\u003e\n \n\u003cul class=\"oates-pdp__bullets\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Fluid-Displacement Load\u003c\/strong\u003e — Internal water shifts position with every rep, forcing the trunk and hips to manage sudden force surges that fixed-weight tools cannot replicate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInverse Stability Valve\u003c\/strong\u003e — One valve controls both weight and reactivity: more water for heavier, more settled work; more air for lighter, highly unpredictable coordination challenges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Handle Layout\u003c\/strong\u003e — Integrated handles give athletes multiple grip options for carries, squats, and rotational drills while keeping the ball close to the body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Sizes for Different Loading Zones\u003c\/strong\u003e — 30 cm green MAX ball for sport-specific patterns at 8–12 lb; 40 cm blue ball for heavier 15–20 lb strength work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft-Sided Spherical Shell\u003c\/strong\u003e — Flexible vinyl construction handles heavy carries, squats, and lifts without the scraped skin or bruised forearms of hard Atlas stones.\u003c\/li\u003e\n\u003c\/ul\u003e\n \n\u003cdiv class=\"oates-pdp__overview\"\u003e\n\u003ch3\u003eWhat Is It?\u003c\/h3\u003e\n\u003cp\u003eThe Khaos® Water Ball is a heavy-duty training sphere with a central filler valve that holds both water and compressed air, along with dual integrated handles for multiple grip options. As the athlete lifts, carries, or rotates the ball, the fluid lags behind and then surges into the outer wall, changing the ball’s balance in real time. No two reps feel exactly the same.\u003c\/p\u003e\n\u003cp\u003eCompared to a traditional medicine ball or Atlas stone, where the weight moves along a smooth, predictable path, the Water Ball’s internal slosh forces the core musculature, hip stabilizers, and shoulder-blade muscles to contract quickly and repeatedly. Compared to fixed free weights, it emphasizes control of momentum and body position rather than purely concentric strength work (the lifting phase where the weight moves up), making it a tool for movement quality and bracing as much as force production.\u003c\/p\u003e\n\u003cul class=\"oates-pdp__overview-meta\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for:\u003c\/strong\u003e Baseball and softball players, rotational athletes in golf, tennis, and hockey, and strength and conditioning staffs looking for an instability alternative to stones or heavy med balls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest used:\u003c\/strong\u003e Bear-hug and dual-handle carries, rotational twist and pivot drills, front-side bracing work, and sport-specific overhead patterns with the green ball.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with:\u003c\/strong\u003e Khaos® Shoulder Shaker, Khaos® Waterboy, TAP® Baseball Training Sock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n \n\u003csection style=\"margin:2.5rem 0;padding:3rem 1.5rem;background:#990033;color:#EFEBE3;border-radius:8px;\"\u003e\n\u003cdiv style=\"text-align:center;margin-bottom:2rem;\"\u003e\n\u003ch2 style=\"color:#EFEBE3;font-size:1.875rem;margin:0 0 0.5rem;\"\u003eHow It Works\u003c\/h2\u003e\n\u003cp style=\"color:#EFEBE3;opacity:0.9;margin:0;\"\u003eThree mechanisms behind the shifting fluid load\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;max-width:1100px;margin:0 auto;\"\u003e\n \n\u003cdiv style=\"background:rgba(239,235,227,0.08);padding:1.5rem;border-radius:8px;border:1px solid rgba(184,138,46,0.4);\"\u003e\n\u003cdiv style=\"color:#B88A2E;margin-bottom:0.75rem;\"\u003e\u003csvg width=\"32\" height=\"32\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" aria-hidden=\"true\"\u003e\u003cpath d=\"M13 2L3 14h9l-1 8 10-12h-9l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch3 style=\"color:#B88A2E;font-size:1.125rem;margin:0 0 0.5rem;\"\u003eSudden Inertia Management\u003c\/h3\u003e\n\u003cp style=\"color:#EFEBE3;margin:0;line-height:1.5;\"\u003eWith a traditional med ball, the load follows a smooth arc. With the Water Ball, the fluid lags and then crashes into the outer wall at the end of each turn, forcing the core musculature to contract immediately to keep the spine and posture organized.\u003c\/p\u003e\n\u003c\/div\u003e\n \n\u003cdiv style=\"background:rgba(239,235,227,0.08);padding:1.5rem;border-radius:8px;border:1px solid rgba(184,138,46,0.4);\"\u003e\n\u003cdiv style=\"color:#B88A2E;margin-bottom:0.75rem;\"\u003e\u003csvg width=\"32\" height=\"32\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2 L4 6 v6 c0 5 4 9 8 10 c4-1 8-5 8-10 V6 z\"\u003e\u003c\/path\u003e\u003cpath d=\"M9 12 l2 2 l4-4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch3 style=\"color:#B88A2E;font-size:1.125rem;margin:0 0 0.5rem;\"\u003eFront-Side Brace Training\u003c\/h3\u003e\n\u003cp style=\"color:#EFEBE3;margin:0;line-height:1.5;\"\u003ePower leaks when the front leg or trunk sags at foot plant. The Water Ball’s unpredictable load in lunges and step-behind drills teaches the hips and trunk to brace reflexively against sudden momentum shifts before force can travel upward.\u003c\/p\u003e\n\u003c\/div\u003e\n \n\u003cdiv style=\"background:rgba(239,235,227,0.08);padding:1.5rem;border-radius:8px;border:1px solid rgba(184,138,46,0.4);\"\u003e\n\u003cdiv style=\"color:#B88A2E;margin-bottom:0.75rem;\"\u003e\u003csvg width=\"32\" height=\"32\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" aria-hidden=\"true\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"6\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch3 style=\"color:#B88A2E;font-size:1.125rem;margin:0 0 0.5rem;\"\u003eWhole-Body Neuromuscular Demand\u003c\/h3\u003e\n\u003cp style=\"color:#EFEBE3;margin:0;line-height:1.5;\"\u003eThe wandering center of gravity prevents any single muscle group from taking over, spreading tension across the hands, forearms, arms, and shoulder-blade stabilizers simultaneously and sharpening the position sensors (proprioceptors) that protect joints under load.\u003c\/p\u003e\n\u003c\/div\u003e\n \n\u003c\/div\u003e\n\u003c\/section\u003e\n \n\u003csection style=\"margin:2.5rem 0;padding:2.5rem 1.5rem;background:#EFEBE3;border-radius:8px;border:1px solid rgba(184,138,46,0.3);\"\u003e\n\u003cp style=\"color:#B88A2E;text-transform:uppercase;letter-spacing:0.1em;font-size:0.875rem;font-weight:600;margin:0 0 0.5rem;text-align:center;\"\u003eBacked by Research\u003c\/p\u003e\n\u003ch2 style=\"color:#990033;text-align:center;margin:0 0 1.5rem;\"\u003eThe Science of Fluid-Displacement Training\u003c\/h2\u003e\n\u003cp style=\"max-width:780px;margin:0 auto 2rem;line-height:1.6;color:#333;\"\u003eThere is no single peer-reviewed study on the Khaos® Water Ball itself; support comes from broader evidence on unstable resistance, perturbation-based training (using small, unpredictable forces to train balance and control), and momentum management in rotational sports. Research on upper-body perturbation and unstable-resistance training supports improvements in neuromuscular control and dynamic trunk stability for overhead and rotational athletes.\u003c\/p\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.5rem;max-width:900px;margin:0 auto;\"\u003e\n\u003cdiv style=\"text-align:center;padding:1rem;background:#fff;border-radius:8px;border:1px solid rgba(184,138,46,0.3);\"\u003e\n\u003cdiv style=\"font-size:2.25rem;font-weight:700;color:#990033;line-height:1;\"\u003e2 Sizes\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.875rem;color:#333;margin-top:0.5rem;\"\u003e30 cm green MAX ball and 40 cm blue ball for different loading zones and athlete levels\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;padding:1rem;background:#fff;border-radius:8px;border:1px solid rgba(184,138,46,0.3);\"\u003e\n\u003cdiv style=\"font-size:2.25rem;font-weight:700;color:#990033;line-height:1;\"\u003e8–20lb\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.875rem;color:#333;margin-top:0.5rem;\"\u003eCombined fill range across both variants — tunable from sport-specific patterns to heavy strength work\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;padding:1rem;background:#fff;border-radius:8px;border:1px solid rgba(184,138,46,0.3);\"\u003e\n\u003cdiv style=\"font-size:2.25rem;font-weight:700;color:#990033;line-height:1;\"\u003e360°\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.875rem;color:#333;margin-top:0.5rem;\"\u003eMulti-directional fluid shift — no two reps produce the same force pattern or balance demand\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cscript\u003e\n(function(){\n  function buildIframe(vid,sec){\n    var f=document.createElement('iframe');\n    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});\n})();\n\u003c\/script\u003e\n\u003csection style=\"padding:2rem 1.25rem;background:#990033;border-radius:8px;\"\u003e\u003cdiv style=\"text-align:center;margin-bottom:1.5rem;\"\u003e\n\u003cp style=\"color:#B88A2E;text-transform:uppercase;letter-spacing:0.08em;font-size:0.75rem;font-weight:600;margin:0 0 0.25rem;\"\u003eVideo Library\u003c\/p\u003e\n\u003ch2 style=\"color:#EFEBE3;font-size:1.625rem;margin:0 0 0.35rem;\"\u003eSee It In Action\u003c\/h2\u003e\n\u003cp style=\"color:rgba(239,235,227,0.85);font-size:0.875rem;margin:0;\"\u003eClick the thumbnail to play from the start — click any timestamp to jump to that moment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:rgba(239,235,227,0.06);border:1px solid rgba(184,138,46,0.3);border-radius:8px;padding:1rem;\"\u003e\n\u003cp style=\"color:#B88A2E;font-size:0.72rem;font-weight:700;text-transform:uppercase;letter-spacing:0.05em;margin:0 0 0.3rem;\"\u003e2024\u003c\/p\u003e\n\u003ch3 style=\"color:#EFEBE3;font-size:0.95rem;font-weight:600;margin:0 0 0.65rem;line-height:1.3;\"\u003eKHAOS® Water Ball: The Ultimate Instability Workout\u003c\/h3\u003e\n\u003cdiv id=\"kwbv0\" style=\"position:relative;padding-bottom:56.25%;height:0;border-radius:6px;overflow:hidden;margin-bottom:0.75rem;background:#6b0024;cursor:pointer;\" data-oyt-thumb=\"kwbv0\" data-oyt-vid=\"rqXPk1qmsl8\" role=\"button\" tabindex=\"0\" aria-label=\"Play KHAOS® Water Ball: The Ultimate Instability Workout for Full-Body Carries, Squats \u0026amp; Rotational Training\"\u003e\n\u003cimg src=\"https:\/\/img.youtube.com\/vi\/rqXPk1qmsl8\/maxresdefault.jpg\" onerror=\"this.onerror=null;this.src='https:\/\/img.youtube.com\/vi\/rqXPk1qmsl8\/hqdefault.jpg';\" alt=\"KHAOS® Water Ball: The Ultimate Instability Workout for Full-Body Carries, Squats \u0026amp; Rotational Training\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;\" loading=\"lazy\"\u003e\u003cdiv style=\"position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(153,0,51,0.92);border-radius:50%;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:2;\"\u003e\u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"#EFEBE3\" aria-hidden=\"true\"\u003e\u003cpath d=\"M8 5v14l11-7z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);vertical-align:top;\"\u003e\u003cbutton data-oyt-ts=\"kwbv0\" data-oyt-vid=\"rqXPk1qmsl8\" data-oyt-sec=\"0\" style=\"background:none;border:none;border-bottom:1px dotted rgba(184,138,46,0.6);color:#B88A2E;font-weight:700;font-size:1.5rem;padding:0;cursor:pointer;white-space:nowrap;\"\u003e0:00\u003c\/button\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);color:#EFEBE3;font-size:1.25rem;line-height:1.4;\"\u003eVisual presentation of the spherical heavy-duty vinyl design and dual-handle configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);vertical-align:top;\"\u003e\u003cbutton data-oyt-ts=\"kwbv0\" data-oyt-vid=\"rqXPk1qmsl8\" data-oyt-sec=\"15\" style=\"background:none;border:none;border-bottom:1px dotted rgba(184,138,46,0.6);color:#B88A2E;font-weight:700;font-size:1.5rem;padding:0;cursor:pointer;white-space:nowrap;\"\u003e0:15\u003c\/button\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);color:#EFEBE3;font-size:1.25rem;line-height:1.4;\"\u003eSetup demo — opening the secure filler port, adding water to the desired weight, and pumping air.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);vertical-align:top;\"\u003e\u003cbutton data-oyt-ts=\"kwbv0\" data-oyt-vid=\"rqXPk1qmsl8\" data-oyt-sec=\"32\" style=\"background:none;border:none;border-bottom:1px dotted rgba(184,138,46,0.6);color:#B88A2E;font-weight:700;font-size:1.5rem;padding:0;cursor:pointer;white-space:nowrap;\"\u003e0:32\u003c\/button\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);color:#EFEBE3;font-size:1.25rem;line-height:1.4;\"\u003eBear-Hug Carry — how the shifting internal load tries to pull the trunk out of alignment during walking drills.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);vertical-align:top;\"\u003e\u003cbutton data-oyt-ts=\"kwbv0\" data-oyt-vid=\"rqXPk1qmsl8\" data-oyt-sec=\"52\" style=\"background:none;border:none;border-bottom:1px dotted rgba(184,138,46,0.6);color:#B88A2E;font-weight:700;font-size:1.5rem;padding:0;cursor:pointer;white-space:nowrap;\"\u003e0:52\u003c\/button\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);color:#EFEBE3;font-size:1.25rem;line-height:1.4;\"\u003eRotational Twist and Pivot Drill — hitters learning to brace the lower body while moving through contact points.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);vertical-align:top;\"\u003e\u003cbutton data-oyt-ts=\"kwbv0\" data-oyt-vid=\"rqXPk1qmsl8\" data-oyt-sec=\"70\" style=\"background:none;border:none;border-bottom:1px dotted rgba(184,138,46,0.6);color:#B88A2E;font-weight:700;font-size:1.5rem;padding:0;cursor:pointer;white-space:nowrap;\"\u003e1:10\u003c\/button\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);color:#EFEBE3;font-size:1.25rem;line-height:1.4;\"\u003eFront-Side Squat and Holding Block — pitchers training the lead leg to brace against sudden shifts in momentum.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);vertical-align:top;\"\u003e\u003cbutton data-oyt-ts=\"kwbv0\" data-oyt-vid=\"rqXPk1qmsl8\" data-oyt-sec=\"95\" style=\"background:none;border:none;border-bottom:1px dotted rgba(184,138,46,0.6);color:#B88A2E;font-weight:700;font-size:1.5rem;padding:0;cursor:pointer;white-space:nowrap;\"\u003e1:35\u003c\/button\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:0.4rem 0.6rem;border-bottom:1px solid rgba(184,138,46,0.2);color:#EFEBE3;font-size:1.25rem;line-height:1.4;\"\u003eSizing comparison — 30 cm green MAX ball (8–12 lb fills) vs. 40 cm blue ball (15–20 lb strength work).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003cstyle\u003e\n.od{border:1px solid rgba(184,138,46,0.3);border-radius:6px;margin-bottom:0.5rem;padding:0.75rem 1rem;background:#fff;}\n.os{cursor:pointer;font-weight:600;color:#990033;}\n.oth{padding:0.45rem 0.5rem;text-align:left;background:#EFEBE3;border-bottom:1px solid #eee;white-space:nowrap;font-weight:600;}\n.otd{padding:0.45rem 0.5rem;border-bottom:1px solid #eee;}\n.of{border:1px solid rgba(184,138,46,0.4);border-radius:6px;margin-bottom:0.5rem;padding:0.75rem 1rem;background:rgba(239,235,227,0.08);}\n.ofa{cursor:pointer;font-weight:600;color:#B88A2E;}\n.ofp{color:#EFEBE3;}\n\ndetails summary{display:flex;justify-content:space-between;align-items:center;list-style:none;}\ndetails summary::-webkit-details-marker{display:none;}\ndetails summary::after{content:\"\\276F\";font-size:.8rem;color:#B88A2E;transition:transform .2s;margin-left:.5rem;}\ndetails[open] summary::after{transform:rotate(90deg);}\n\u003c\/style\u003e\n\n\u003ch2 style=\"color:#990033;text-align:center;margin:2.5rem 0 1.5rem;\"\u003eProduct Details\u003c\/h2\u003e\n\n\u003cdetails class=\"od\"\u003e\u003csummary class=\"os\"\u003eHow to Use It\u003c\/summary\u003e\n\u003cp\u003e\u003cstrong\u003eFoundational carries and bracing patterns:\u003c\/strong\u003e Start with dual-handle or bear-hug carries using a moderate fill, walking in a straight line while keeping the trunk tall as the internal load tugs the body off center. Progress to lateral and backward carries, challenging the hips and torso to maintain alignment as the water shifts on every step.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRotational and hitting-focused drills:\u003c\/strong\u003e Use rotational twist and pivot drills where the athlete turns with the ball and then resists the surge of fluid at the end of the motion, simulating contact and follow-through demands. Emphasize bracing the lower body and keeping the trunk strong rather than chasing speed alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOverhead and hitter-specific patterns (green ball):\u003c\/strong\u003e With the 30 cm green ball at moderate fills, overhead athletes can rehearse throw-like arm paths, focusing on keeping the trunk stable while the internal water tests control at the top of the motion. Hitters can hold it at the contact position, keeping the front side firm as the shifting load tries to move them off that posture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFront-side bracing and pitching patterns:\u003c\/strong\u003e Integrate front-side squat and holding blocks where pitchers step, plant, and hold position while the ball’s weight tries to pull them forward or sideways. Focus on a firm front leg and stable trunk.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"od\"\u003e\u003csummary class=\"os\"\u003eVariant \u0026amp; Fill Weight Selection Guide\u003c\/summary\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin-top:0.75rem;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#990033;color:#EFEBE3;\"\u003e\n\u003cth style=\"padding:0.5rem;text-align:left;\"\u003eVariant\u003c\/th\u003e\n\u003cth style=\"padding:0.5rem;text-align:left;\"\u003eFill Range\u003c\/th\u003e\n\u003cth style=\"padding:0.5rem;text-align:left;\"\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.45rem 0.5rem;border-bottom:1px solid #eee;\"\u003e30 cm Green (MAX)\u003c\/td\u003e\n\u003ctd style=\"padding:0.45rem 0.5rem;border-bottom:1px solid #eee;\"\u003e~8–12 lb\u003c\/td\u003e\n\u003ctd style=\"padding:0.45rem 0.5rem;border-bottom:1px solid #eee;\"\u003eYouth athletes, sport-specific patterns, overhead throw paths, hitter contact positions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:0.45rem 0.5rem;\"\u003e40 cm Blue (heavy-duty vinyl)\u003c\/td\u003e\n\u003ctd style=\"padding:0.45rem 0.5rem;\"\u003e~15–20 lb\u003c\/td\u003e\n\u003ctd style=\"padding:0.45rem 0.5rem;\"\u003eHigh-school, college, and professional strength work with heavier unstable loads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"margin-top:0.75rem;font-size:0.875rem;color:#555;\"\u003eFor most high-school and college athletes, start with the green ball at 8–10 lb and progress to heavier green or light blue fills only after several sessions of clean control.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"od\"\u003e\u003csummary class=\"os\"\u003eWho This Is For\u003c\/summary\u003e\n\u003cul\u003e\n\u003cli\u003eCommonly used for baseball and softball players — especially with the 30 cm green ball — to build rotational strength, front-side bracing, and sport-specific patterns like overhead throwing paths and firm contact positions for hitters.\u003c\/li\u003e\n\u003cli\u003eCommonly used for rotational athletes in other sports (golf, tennis, hockey) who need to manage momentum through the hips and torso.\u003c\/li\u003e\n\u003cli\u003eCommonly used by strength and conditioning staffs who want an alternative to stones or heavy med balls that adds an instability component to carries and squats.\u003c\/li\u003e\n\u003cli\u003eCommonly used for older youth athletes with lighter fills and simple patterns, under close coach or qualified adult supervision.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size:0.875rem;color:#555;margin-top:0.5rem;\"\u003eWe are not coaches.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"od\"\u003e\u003csummary class=\"os\"\u003eWhat This Implement Does NOT Do\u003c\/summary\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not replace foundational strength work, sprinting, or skill practice; it is one instability tool inside a broader program.\u003c\/li\u003e\n\u003cli\u003eIt does not guarantee velocity gains or power increases on its own; outcomes depend on full-program design, volume, and recovery.\u003c\/li\u003e\n\u003cli\u003eIt does not train fine motor control or precision mechanics.\u003c\/li\u003e\n\u003cli\u003eIt should not be used as a stand-alone rehabilitation solution without oversight from a qualified medical professional.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"od\"\u003e\u003csummary class=\"os\"\u003eTechnical Specs\u003c\/summary\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.9rem;margin-top:0.5rem;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"oth\"\u003eProduct Name\u003c\/th\u003e\n\u003ctd class=\"otd\"\u003eKhaos® Water Ball\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"oth\"\u003eAlso Known As\u003c\/th\u003e\n\u003ctd class=\"otd\"\u003eWater Ball, Water Sphere, Green Ball, Blue Ball, Water Instability Trainer, Sport-Specific Movement Ball\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"oth\"\u003eGreen Ball SKU\u003c\/th\u003e\n\u003ctd class=\"otd\"\u003eMKBM — UPC: 608938931337\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"oth\"\u003eBlue Ball SKU\u003c\/th\u003e\n\u003ctd class=\"otd\"\u003eHKBB — UPC: 608938930620\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"oth\"\u003eGreen Ball\u003c\/th\u003e\n\u003ctd class=\"otd\"\u003e30 cm diameter — MAX polyester-lined vinyl, puncture resistant, 2-yr warranty — ~2 lb empty — 8–12 lb fill range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"oth\"\u003eBlue Ball\u003c\/th\u003e\n\u003ctd class=\"otd\"\u003e40 cm diameter — heavy-duty vinyl, dual handles — ~3 lb empty — 15–20 lb fill range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"oth\"\u003eTraining Focus\u003c\/th\u003e\n\u003ctd class=\"otd\"\u003eRotational force production, front-side bracing, multi-planar torso stability, whole-upper-body engagement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:0.45rem 0.5rem;text-align:left;background:#EFEBE3;font-weight:600;\"\u003eEnvironment\u003c\/th\u003e\n\u003ctd style=\"padding:0.45rem 0.5rem;\"\u003eIndoor or outdoor — turf, grass, or rubber surfaces with room for full carries, squats, and rotational work\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"od\"\u003e\u003csummary class=\"os\"\u003eSafety and Youth Guardrails\u003c\/summary\u003e\n\u003cp\u003eOates Specialties training tools, including the Khaos® Water Ball, are designed for athletes roughly 13 and older training under coach or qualified adult supervision. For younger or growth-window athletes, the emphasis should be on better movement patterns, coordination, and timing rather than heavy-load work. Use in clear spaces. Stop immediately on sharp pain, loss of normal control, or unusual symptoms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrowth-window guidance:\u003c\/strong\u003e Athletes experiencing rapid growth should use conservative loads and be cautious about soreness at growth plates or tendon sites — bone adaptation can outpace soft tissue during these periods.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a toy:\u003c\/strong\u003e A training implement for supervised athlete and coach use only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRehabilitation use only under supervision:\u003c\/strong\u003e Introduce only under the direct advisement of a certified medical professional or rehab coordinator.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/details\u003e\n\n\u003csection style=\"margin:2.5rem 0 1.5rem;padding:2rem 1.25rem;background:#990033;color:#EFEBE3;border-radius:8px;\"\u003e\n\u003ch2 style=\"color:#EFEBE3;text-align:center;margin:0 0 1.25rem;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails class=\"of\"\u003e\u003csummary class=\"ofa\"\u003eHow heavy should I fill the ball to start?\u003c\/summary\u003e\n\u003cp class=\"ofp\"\u003eMany athletes start with the green ball at roughly 8–10 lb of water, then adjust up or down as they demonstrate clean control and good next-day response.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"of\"\u003e\u003csummary class=\"ofa\"\u003eHow is this different from a regular medicine ball?\u003c\/summary\u003e\n\u003cp class=\"ofp\"\u003eA medicine ball has a fixed center of mass and moves along a smooth arc. The Khaos® Water Ball’s internal water lags behind movement and then crashes into the outer wall, creating sudden force changes the torso must control — no two reps feel the same.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"of\"\u003e\u003csummary class=\"ofa\"\u003eWhich ball should my athletes use, green or blue?\u003c\/summary\u003e\n\u003cp class=\"ofp\"\u003eYounger or lighter athletes typically start with the 30 cm green MAX ball at 8–10 lb. Stronger high-school, college, and professional athletes often progress to the 40 cm blue ball for heavier, more demanding work at 15–20 lb.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"of\"\u003e\u003csummary class=\"ofa\"\u003eHow is this different from the Khaos® Shoulder Shaker?\u003c\/summary\u003e\n\u003cp class=\"ofp\"\u003eThe Khaos® Shoulder Shaker is a compact hand-held water ball focused on shoulder and scapular control. The Khaos® Water Ball is larger with dual handles and is designed to challenge full-body carries, squats, and rotational drills that load the hips, trunk, and shoulders together.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"of\"\u003e\u003csummary class=\"ofa\"\u003eWhere does it fit in a weekly plan?\u003c\/summary\u003e\n\u003cp class=\"ofp\"\u003eA practical starting plan is 1–2 sessions per week with the green MAX ball at 8–10 lb, 2–3 sets of short carries or rotational reps, after warm-up and before high-intent skill work.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003c\/section\u003e\n\n\u003cp style=\"text-align:center;margin-top:1.5rem;padding:1.5rem;background:#EFEBE3;color:#990033;border-radius:8px;border:1px solid rgba(184,138,46,0.3);\"\u003eQuestions before you buy? \u003cstrong\u003eCall or Text Our Team\u003c\/strong\u003e at \u003cstrong style=\"color:#B88A2E;\"\u003e(936) 295-4459\u003c\/strong\u003e\u003c\/p\u003e","brand":"Oates Specialties LLC","offers":[{"title":"30cm GREEN Max w\/Fixed Handles","offer_id":45039805628638,"sku":"MKBM","price":99.95,"currency_code":"USD","in_stock":true},{"title":"40cm BLUE w\/Fixed Handles","offer_id":45039805595870,"sku":"HKBB","price":109.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/7110\/3454\/files\/Enhanced_Water_Ball_Action_Shot_with_Product_Image_and_Pro_Badge_1.webp?v=1777664259","url":"https:\/\/oatesspecialties.com\/es\/products\/water-ball","provider":"Oates Specialties LLC","version":"1.0","type":"link"}