Portable, lightweight and easy to store!. Can be used four ways: as a balance board, stretch/slant aerobic step, aerobic step and as a gym ball base. Accommodates users of all fitness levels to help build endurance, strength and improve overall fitness. Shock absorbing, non-stick, non-slip surface. Start building your core, lower body and more with our 4-in-1 Gym Step. Availability: Usually ships in 2-3 business days.