List Price: 9.99 Deal Price: 7.25 You Save: .74 (36%)Appropriate for everyone from elite athletes to kids to weekend warriors trying to stay in shape, the Bosu 3D System Balance Trainer helps you strengthen and coordinate several major muscle groups, including the muscles you don't see. The 3D System targets your core muscles--the muscles around your abdominal and back area--while you perform a host of different workouts, from lunges and bicep curls to lateral shoulder raises and hip extensions. As a result, you not only gain strength, trim, and tone, but also improve your balance and coordination along the way.Expires Feb 16, 2011