Specifications: Condition: New Item Type: Springback Wheels Roller Material: eco-friendly plastic + rubber Type of sports: Strength Training Function: Waist & Abdomen Exercise Type: Double-Wheeled Overall length: subject to the length of the handle: 37 cm Bearing range: about 100KG ~ 500KG Features: Made of durable ABS, it can withstand even in the most intense training without damaging the floor. 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. Free sports kneeling pad: Knee pad provide maximum protection and comfort for your knees. 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. 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. Package Included: 1x Springback Wheels Roller 1x Kneeling Pad