Resist Gym Ball - 65 CM (PP-GB65CM) The Gym ball is a plastic elastic ball with a diameter of about arm’s length. This ball is filled with high pressures of air, and is most often used in physical therapy, exercise and athletic training, as well as weight training.

Resist Gym Ball - 65 CM (PP-GB65CM) The Gym ball is a plastic elastic ball with a diameter of about arm’s length. This ball is filled with high pressures of air, and is most often used in physical therapy, exercise and athletic training, as well as weight training.