Stability & Balance -The ultra-wide, spherical wheel allows users to carve left or right to engage all sets of abdominals, including oblique muscles. The increased wheel width offers stability and balance.Superior Materials - Our ab wheel is made of high-quality plastic and stainless steel rods for durability, safety, and silence. Our ab wheel uses spiral alloy spring steel with High & Even elasticity, self-rebound, and smart brake. It provides smooth resistance when rolling forward, and provides rebounding power backward.Use at home or at the gym - Our ab roller wheel is small and modular allowing easy portability and carrying. These non-slip handles are removable for easy transport and storage.Quick start and beginner friendly - It will not only help you improve your Abs and lower back.