Features: 1. Two-wheel And Triangular Structure Design: Compare to one-wheel roller, our ab roller with two-wheel and triangular structure design ensure your safety and stability during fitness. Comes with a thick foam mat to provide support and comfort to your knees. 2. Automatic Rebounds: The built-in spring and greater resistance can prevent the AB wheel from slipping during smooth exercise, automatic rebounds function can protect you from injury during exercise, especially suitable for beginners. 3. Exercise The Whole Body: It can help stretch and exercise abdominal, arm, chest, shoulder, back muscles, get six pack abs, exercise wheel will help strengthen your core strength. 4. Reassuring Quality: The automatic rebounds belly wheel is made of stable, environmentally friendly plastic with a sponge handle, which is non-skid, sweat-absorbent, and comfortable. The handle is easy to remove or install, making it more convenient to carry. 5. Intimate Mobile Phone Holder: The automatic rebounds abdominal wheel integrates a mobile phone holder, if you are a beginner, this holder can help you watch the teaching video more easily, and you can practice while watching. As your health improves, you can put your phone on the stand and play sensational music. Specification: Material: PP + TPR Product Color: Blue, Red, Orange, Light Blue Package Size: 26 x 17.5 x 12cm Package Weight: 80g Package Included: 1 x Ab Wheel Roller 1 x Mat