Tono Shaper isometric squeeze resistance exercise easily helps shape and tone muscles. Firm your arms, thighs, calves, back, chest and butt for a better looking body simply by using isometric squeeze resistance exercise. The contour and ergonomic designed Tono Shaper can be used standing, sitting or lying down for multiple workout options anywhere, anytime. The soft, comfortable medium density foam Tono Shaper can be easily cleaned with mild soap and warm water. Exercise chart included. Patent protected. 13″ L X 6.5″ W. Weight 1.5 Lbs. Made from medium density EVA.