Train smarter, throw better, and protect your arm with the TAP® Baseball Training Sock—also known as the Durathro® Sock, Mitt, or Oven Mitt. This innovative, wearable throwing aid is trusted by athletes and coaches to improve throwing efficiency, build arm strength, and reduce injury risk—all without needing a partner or open field.
How to Use the TAP® Training Sock:
1. Insert a ball – Drop a baseball or weighted ball into the sock.
2. Secure the strap – Wrap the adjustable strap around your wrist and cinch it tightly for a snug fit.
3. Throw without release – Perform your throwing motion as normal, allowing the ball to stay inside the sock upon “release.”
Key Benefits
Train Anywhere: Practice full-motion throws indoors or outdoors without a partner or large space
Boost Performance: Improve throwing velocity, accuracy, and control by refining movement patterns
Prevent Injuries: Strengthen the posterior shoulder and reinforce safe deceleration
Accelerate Skill Development: Get instant feedback and adapt your technique in real time
All-Level Versatility: Ideal for beginners to elite athletes across baseball, tennis, and volleyball
Comfort-Driven Design: Features soft lining and an adjustable synching mechanism for irritation-free use
What Sets It Apart:
Developed under the guidance of renowned pitching coaches Ron Wolforth and Randy Sullivan, the TAP® Baseball Training Sock is based on cutting-edge sports science. It supports a modified ball hold program that allows for a full throwing motion—even in confined environments—without the mechanical inefficiencies of holding a weighted ball past release.
Backed by Science:
Dynamic Systems Theory (DST): Encourages your body to self-organize into more efficient movement patterns
Constraint-Led Approach (CLA): Uses the sock as a constraint to promote variability, exploration, and faster motor learning
Updated Design (November 2023):
Shortened Length: Reduces upper arm friction for smoother motion
Comfort Lining: Minimizes irritation at the wrist and hand
Adjustable Synching Mechanism: Customize the fit for optimal performance and comfort
Who It’s For:
Whether you're a pitcher, position player, or overhead athlete, the TAP® Training Sock is ideal for:
Baseball Players: Improve pitching delivery, velocity, and arm health
Tennis Players: Build serve power and overhead control
Volleyball Players: Enhance spike strength, serve velocity, and setting precision
This allows for full-intensity throws without needing a catcher or open space, making it ideal for indoor or solo training.
Whether you call it the Sock, Mitt, Oven Mitt, or Durathro® Sock, this tool is a game-changer for athletes looking to throw harder, safer, and smarter.
Frequently Asked Questions
Yes! While it’s not a medical device, the TAP® Baseball Training Sock can be a valuable complement to rehab programs guided by a medical professional.
Controlled Environment: Allows progressive, low-impact reintroduction of throwing motions.
Focus on Deceleration Mechanics: Reinforces proper post-throw stabilization to help protect recovering joints.
Customizable Intensity: Users can start with light-weight balls and gradually increase load and range of motion.
Always consult a licensed healthcare provider before integrating it into a rehab routine.
Keeping your Training Sock in top shape is easy and ensures long-term performance.
Hand Wash Recommended: Gently scrub with mild soap and lukewarm water; avoid soaking.
Air Dry Only: Lay flat or hang dry—no tumble dryers, as heat may affect material integrity.
Inspect Frequently: Check the synching mechanism and seams for wear, especially after high-volume use.
Absolutely—it’s suitable for young athletes as long as it’s used responsibly and with appropriate supervision.
Technique Before Intensity: Emphasize correct mechanics over throwing velocity.
Coach or Parent Supervision: Helps reinforce safe use and proper movement patterns.
It’s a great tool for developing foundational skills without risking overexposure to full-intensity throws.
It offers a portable and biomechanically safe alternative to conventional throwing practices.
Space-Saving: No field or net required, making it ideal for at-home use.
Full Throwing Motion: Unlike drills that stop at release, this device supports deceleration—a key injury prevention element.
Versatile Application: Can simulate pitch types and game-like movements with fewer environmental constraints.
Think of it as “long toss meets science”—without needing a large area of open turf.
Yes, it’s highly adaptable for use throughout the competitive season.
Warm-Up Tool: Great for activating the arm with low-impact throws before games.
Maintenance Work: Keeps mechanics sharp between appearances without fatiguing the arm.
On-the-Go Readiness: Portable enough for bullpens, dugouts, or travel days.