30-2260 Size / Shape: 8" W x 36" D / Round Item sold separately Features: -Perfect for positioning, balance, postural and muscle re-education. -User can move from an easier (smaller diameter) to a more difficult (larger diameter) roller. -Great tool for ankle stretching and knee rehabilitation. -Use half roll as rocker board by standing on flat side. -Diameter refers to the width of the half-round profile. -Strong enough to be used by large adults and active children. -Can be used alone or with other exercisers such as Cando exercise band, tubing, weights and balls. -Foam rollers for washability, firmness, and durability. -Blue foam rollers to conceal dirt and wear. -Offer more durability than the white rollers at an economical cost. -Available in half-round and round. -Available in 2 sizes: 8" W x 12" D and 8" W x 36" D.