Notethechangeinthesecondimagewhentherearemultipleoptions.Eachoptionisdifferentandcomesindifferentstyles. Type : Double-Wheeled Function : Body Application : Breaststroke Abdomen Trainer Origin : Mainland China Type of sports : Strength Training Features: Auto Rebound Design Our ab roller adopts automatic rebound technology, which helps protect muscles from stress during exercise. Moreover, the auto-rebound feature helps beginners tighten their core, standardize movement, and keep exercising for longer periods of time. The built-in smart braking system makes the rebound smoother and protects the user from injury. Multifunctions Besides traditional exercise, you can also practise plank support to fully exercise your core muscles, including arm, chest, abdomen, back, buttocks and lower body muscles, etc. Double Wheel Design Different from single or thin wheel Ab wheels on the market, this elbow support abdominal wheel has 105MM wide front and rear wheels for smooth rolling and better control. It can help you exercise every muscle and core while controlling your body more safely, especially for beginners. [Wear-resistant material] The roller is wrapped with soft material, which has good sound insulation effect. It is safer to use and won't hurt the floor. The thickened foam pad design protects the elbows from damaging during long-time exercise. Its sponge grip, which is non-slip, sweat-absorbent, comfortable, fade-resistant and durable, will not make noise or scratch the floor, and has a longer service life. Convenient Design Equipped with a mobile phone holder, stable and not falling off. Fully combine sports with entertainment to make sports more exciting. Package: 1*Abdominal Wheel 1*Kneeling Mat 1*Timer(Corresponding style needs to be selected) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.