Features: 12 Wheel Design: 2 wheel built in spring, generate resistance when you rolling out, provide assistance on the way back, more sturdy than one wheel design, much easier to use than the standard wheel abdominal roller. 2Quick Start And Beginner Friendly: The spring strong springback design targets your abdominals, hip flexors and back muscles. Automatic springback function and thick foam mat can protect you from injury during exercise, especially suitable for beginner. 3Automatic Springback Abdominal Wheel: The automatic springback belly wheel is designed with easy glide automatic springback technology, reducing wheel swing and helping you control your exercise. 4Exercise The Whole Body: Make your fitness more efficient. With dedicated practice, this exercise wheel will speed up your core, low back strengthening. It can help stretch and exercise the abdominal, arm, chest, shoulder and back muscles, get 6 pack abs. 5Easy To Use: The automatic springback belly wheel is made of stable, environmentally friendly plastic with a sponge handle, which is non slip, sweat absorbing and comfortable. The handle is easy to remove or install for easy carrying. Item Type: Automatic Springback Abdominal Wheel Material: ABS, Rubber Weight: Approx. 1246g / 44oz Package Included: 1 x Abdominal Wheel 2 x Handle 1 x Pad&nbsp