Feature:1. Auto Rebound Design: Abdomen roller adopts an auto rebound technology, with an intelligent brake system and spring technology, making the rebound smoother and easier.2. Double Wheel: Has a wide front and back double wheels, which allows for rolling and better control, making it perfect for beginners and experts alike3. Excellent Workmanship: Constructed with stable and eco friendly plastic, with a sponge handle that is non slip, sweat absorbing, comfortable, fade resistant and durable, while also giving you longer workout times.4. Training: Help both men and women shape their muscles, which will keep you in better and flattering shape and increase your charm.5. 5 Layers: Abdomen roller is made of 5 layers of slip resistant material, including anti slip layer, reinforcement layer, shock absorbing layer, noise reducing layer and support layer.Specification:Item Type: Abdomen RollerMaterial: PP, metal.Package List:1 x Abdominal Wheel1 x Cell Phone Holder1 x Kneeling Mat2 x Hand Support Pads2 x Support Tubes1 x Instruction