Single-wheeled Abdominal Roller with Anti-skid Mat, Muscles Training Body Building Fitness Equipment for Home, GymSpecifications: Material: ABS+Steel Color: Black/Red/Yellow/Blue/White Size: 30cm16cm/11.8inch6.3inch Gender: Unisex Occasion: SportsNote: 1. Warm up before exercise. Do not start the exercise directly. 2. When the children are playing, please accompany with the parents. 3. There may be 1-2 cm deviation in different sizes.4. Color may be lighter or darker due to the different PC display.Package Contents: 1Abdominal Roller+1Anti-skid MatPromise: If the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.