Focus on your fitness with the BOSU(R) 50 cm Sport Balance Trainer. Designed with the same features of the full size, the BOSU(R) Sport is 50 cm for easier portability and accommodates all fitness levels. A durable dome design delivers continuous challenges while providing a versatile platform for many exercises. Combine effective combinations of cardio, toning and flexibility to boost your performance with the BOSU(R) Sport Balance Trainer FEATURES: Compact Sport Balance Trainer designed with the same style base as the original BOSU(R) Features a smooth, stable base for stability and for easy placement everywhere you go Durable dome design delivers continuous changing surface for a variety of balance workouts Helps target and strengthen several major muscle areas while performing a variety of exercises Great for performing squats, bicep curls, lateral shoulder raises, hip extensions and much more Helps boost athletic performance in a variety of sports Ideal for beginner to elite level athletes Includes BOSU(R) Sport Balance Trainer, Foot Pump and Owner's Manual Product Dimensions: 50 cm diameter Manufacturer's Warranty: 90 days Model : 72-15850-50, 72-15850-50PK BOSU