Rebound Abdominal Wheel: Rebound Abdominal Wheel acts as your personal fitness trainer, helping you to build stronger and bigger six pack abs, burn calories, build muscle and improve your overall endurance.5 Inch Width Wheel Design: Our wheel is 5 width. Stable two-wheel gives you superior stability, allowing unrestricted movement for a more intense workout, and also ensures a safe and comfortable sports experience.Double Wheel Design: Kvittra's exercise abs roller has a wide front and back two wheels for smooth rolling and better control your balance. It helps you work out more safe and effective.Come with Soft Knee Pad: We are equipped with EVA knee pad with the specification of 13.5 * 6 * 0.5inch, which can effectively protect your knee during exercise.Ergonomic Design: Made of ultra wide abdominal roller to provide additional comfort and strong grip. High quality core strengthening wheel is a fitness accessory for men and women. The unique technology makes the main body of the abdominal roller joint free, forming the integrity of the main body.Specification:Type of sports: Strength TrainingFunction: BodyType: Double-WheeledMain material of the product: ABSType: NO TimerPackage Included:1 X Abdominal WheelNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.