Find some of the best prices on Therapy Balls and Yoga Balls right here. All our Therapy Balls and Yoga Balls help you improve core strength and functional movement while developing muscle tone and flexibility. The Power Yoga-Pilates Weight Balls unique handle design offers freedom and comfort while performing exercises and can be used for toning legs while performing floor work. Slim Olive Weight Balls feature an ergonomic shape that fits your palm - an ideal item for arm strength training and rehabilitation.