Roller With Mat Ab Exerciser (2 WHEEL REBOUND AB ROLLER, Grey)
Automatic Rebound Design & Safe: The Ab wheel has a built-in spring, which automatically rebounds during exercise, helping you to return to position and save effort, and to be safer during exercise. Suitable for beginner or advanced fitness level with its good balance and scalability. This new type ab machine is smooth, super stable, easy to change and control direction, and don't worry about deviation when exercise.