•Tips: This ab wheel is designed with easy-glide, self-rebound technology that reduces wheel wobble and helps you control your workout.This widened double wheel, triangular construction, and powerful rebound design help build strength and definition in the abs, back, arms, chest, and shoulders. It also helps burn calories and get in better shape.The rebound wheel is made of stable and environmentally friendly materials, and the sponge handle is non-slip, sweat-absorbent, and comfortable. The handle is easy to remove or install for easy portability.This tummy roller shreds fat and sculpts your body. Works the abs, hip flexors, shoulders, and back to build muscle and improve overall stamina.