Features 1. Automatic Re-bound Design: The roller is designed with easy-glide automatic re-bound technology, reducing wheel swing and helping you control your exercise. You can work out any time and anywhere, make your fitness more efficient. 2. Premium Material: This springback wheels roller is made of stable plastic with a sponge handle that is non-slips, sweat-absorbent, and comfortable. It also has an automatic re-bound feature for added safety. The handle is easy to remove or install, making it more convenient to carry. 3. Fitness wheel roller can be used to crush fat, help you shape your body. It can help stretch and exercise the abdomen, arms, chest, shoulders, back muscles, and get six pack abs, and the sport wheel will help strengthen your core strength. 4. Workout Your Whole Body: Widened double wheel, automatic re-bound; triangular structure, stable and safe and ergonomic. The double spring strong re-bound design enhances the strength and clarity of your abdominal muscles, back, arms, chest, and shoulder muscles. It also helps burning your calories to shape a better figure. 5. Best Gift: This is a great birthday gift, holiday present, or anniversary gift. Just right for friends, family, and co-workers. Specification Material: ABS Color: Blue, Red Size: 10.5 cm Weight: 1200 g Package Include: 1x Abdominal Wheel