Sports Research Ab Wheel (3") | Abdominal Exercise Wheel for Core Strength Training | Includes Knee Pad Get a Flat, Toned Tummy in No Time: This premium core strengthening wheel helps build and tone your abs, arms & back. Effectively work out your core at home, the gym, or the office! Wider Wheel for Added Stability: Our wheel is 3 thick, while other brands are half that size! This gives you superior stability, allowing unrestricted movement for a more intense workout Comfortable Grips: Ergonomically designed grips prevent discomfort in your hands, so you can give 110% to every workout. Removable handles allow for compact storage and easy transport When you buy our Ab Wheel, you also get a FREE foam knee pad to cushion your knees against hard floors at home or at the gym. Plus, we give you a handy Workout Guide to help you correctly perform a variety of targeted, core-shaping exercises. Full Year Warranty: If you dont love the convenience of our ab-rolleror the qualitylet us know. Well return your money, no questions asked. Note: Warranty card must be completed to receive refund.