Perfect for at-home workouts, this inflatable balance ball from Bala is designed to improve core strength, balance, and rehabilitation. Meticulously designed for stability, barre, Pilates, yoga, core training, and stretching, this ball is non-weighted and can be filled according to your personal needs. * Includes one Pilates ball and pump * Non-weighted * Made of sturdy PVC & pop-resistant * 8" circumference