Equipped with a knee pad, this ab roller wheel delivers comfortable workout experience and caring protection. This abs wheel targets your abdominals, hip flexors and back muscles. With dedicated practice, this exercise wheel will speed up your core & low back strengthening while lessoning your risk of muscle injury. This ab wheel roller is portable size-wise -- a compact design that enables you to take it anywhere to exercise, be it your home, office, gym, or outdoors. This high-strength stainless steel shaft of the ab roller for abs workout can hold a maximum weight of 500 pounds for your safety. Widened the wheel(4.1 IN), automatic rebound; triangular structure, stable and safe. Rubber cotton handles provide nonslip and comfortable grip. Thickening anti-slip material for noise and wear resistance: anti-slip layer, reinforcement layer, shock absorption layer, noise reduction layer, support layer. This workout roller goes beyond working your abs and burning your fat. Specifications: Material: Plastic Size: 260*110*30mm Package Included: 1pc* Ab Roller Fitness Wheel