Great skill training aid used for gymnastics training, preschool, and recreation programs. You can rock them, roll them, flip them on there sides, or even stuff them with the optional stuffer bolster! Each piece will velcro together to make a whole donut! Made with 18 oz. Vinyl cover, in multi-colors and 70 ild poly urethane foam. Our donuts are priced as a pair, unlike other competitors who price them for each half! Call for more details toll free 888-837-0352.