Anti Slip AB Roller Automatic Rebound Abdominal Wheel Roller for Arm Waist Leg Exercise with Kneeling Pad Stretch Muscle Trainer Feature: 1. Material: Made of durable ABS, it can withstand even in the most intense training without damaging the floor. 2. Tank type double wheels have strong stability: The double wheels can slide on any surface without slipping. Moreover, the widened flat roller and the texture of the anti-skid tire are stable enough to make the movement more reassuring. Double wheel design provides more stability than single wheel design, which will help you complete a long series of daily movements more easily and reduce the risk of injury. 3. Free sports kneeling pads: Knee pads provide maximum protection and comfort for your knees. 4. The design of charging arc top makes the movement more comfortable: Multi-layer materials, thickened load-bearing mechanism, three-point support, and slope unloading make the movement more smooth and comfortable. Silent noise reduction, automatic rebound, with mobile phone bracket design, sports, listening to music and watching videos without delay. 5. Practicality: Exercise core muscle groups such as abdomen, waist, back, shoulder, arm and lower limbs, effectively exercise muscles and joints, and contribute to overall exercise and weight loss. Specification: Origin: Mainland China Type of sports: Strength Training Function: Waist & Abdomen Exercise Type: Double-Wheeled Model Number: AB Wheel Product material: ABS Product color: blue, red, blue grey (optional) Package size: 370x350x140mm/14.57x13.78x5.51in Product weight: 1370g Package included: 1 X AB Wheel 1 X Kneeling Pad