This is the curved exercise board that provides a low-impact workout on any surface. Its unique design enables users to stand on each end and tone abdominals, quads, and calves by simply twisting the core. Unlike monotonous balance boards or other stationary aerobic aids, this unit encourages active, dance-like movement without putting strain on the knees. Constructed from lightweight ABS, it features cut-out handles on the sides that enable it to also function as an aid for standard push-ups or modified planks. Its 25 1/2" L x 18" W footprint takes up less space than a standard doormat and stores easily in a closet or under a bed. Supports up to 400 lbs. Includes user guide and workout DVD. Blue. 25 1/2" L x 11" W x 1/4" H. (3 1/2 lbs.)