Sponge balls and soft weighted balls are the newest balls available .sponge balls were originally designed to be used in mind/body classes and have added a whole new training dimension to Pilates and yoga. Sponge balls enhance muscle activation and postural alignment.
Soft weighted mini balls add a strength training component to Pilates and yoga exercises. The 4-inch balls range in weight from 4-8 pounds and fit into the palm of your hand.
