Are you bothered by the increasing weight? Admire the good body shape of other people? Don't worry. You can also have a good figure by doing exercise. The ab roller we provide here can train your muscle and give you a good body shape gradually if you insist on taking exercise. Feature - Color: Blue. - Material: Plastic and steel. - Size: About 26.5 * 15.5 * 15.5cm/10.43 * 6.1 * 6.1inch(L*W*H). - The ab roller can tone and strengthen abs, arms and back muscles to help build strong tight core and ab muscles. - Ab wheel includes a knee pad to protect your knees from pain and grinding when working out on hard or wooden floors or on carpets at home or at the gym. - Manufactured with safe, high-grip handles for superior non handling together with dual wide-spaced wheels for optimal stability when performing targeted and advanced exercises. - The ab roller is suitable for both beginners and advanced exercisers to develop balanced core strength.