The BOSU® Ballast Plug was designed to maintain the correct air pressure for this unique weighted filler ball to stay in place when not in use. The Ballast Plug also allows for the user to inflate the ball to either 55 cm – 65 cm depending on their preference.
- Top Quality: Made of durable, latex-free, burst-resistant material.
- Durable Design: Offers the desired inflation for extreme exercises on the BOSU® Ballast Ball.
- Tested: Weight tested to support up to 300 lbs.