Used to improve balance, coordination, flexibility, strength and even just for fun
Used by therapists as an aid for vestibular movement and equilibrium therapy, by fitness professionals as an aid for stretching and strength programs, as seats, and even by pregnant woment in birthing classes
Has a non-slip PVC vinyl surface that is ribbed for extra security
May be under inflated to give a soft, mushy feel or fully inflated for a firm, bouncy feel