Gaiam Essentials Ab WheelThe Gaiam Essentials Ab Roller Wheel provides a quick and effective ab workout. The ab wheel features a large textured non slip wheel with perfectly smooth rolling glide and extra strong sure grip handles for steady motion and control. The roller glides easily on nearly any surface and comes with a supportive foam knee pad, so you can work your core just about anywhere. Ergonomic, sure grip handles Large non skid wheel Easy glide roller Durable