Fitness Core Ab Slider Discs + workout booklet & bag - Glides on carpet and hardwood, for hands and feet, great for home or gym full body workout training, non impact and helps with stability BOOKLET - A full color PRINTED booklet with 20 slider exercises is included to help you get started. No dealing with a PDF. CONVENICE - Can easily fit into your gym bag or carry-on to take anywhere. Includes a free mesh-carrying bag. Simple piece of low-tech equipment that requires little space and can fit anywhere. VARITY - Provides full range of motion while engaging stabilizing muscles by creating unstable surface on carpet or hardwood. LOW IMPACT - Gliding keeps feet and hands on the floor, and lets you move in all planes of motion without impact. MONEY BACK GUARANTEE - Comes with a Happiness guarantee. Return it for any reason. We want you to be happy.