1. Waist slimming and abdomen tightening: This fitness assistant to help you tighten your waist and abdomen through effective sit-ups exercises. 2. Powerful suction cups: Powerful suction cups that the equipment is firmly fixed during exercise and provide stability and support when you do sit-ups. 3. Soft foam pad: The use of soft foam pad can the comfort and cushioning experience when using the equipment, and reduce the risk of discomfort or pain during exercise. 4. Adjustable height: the height of the equipment is adjustable, allowing you to customize it to your favorite level to obtain the best comfort and effectiveness. 5. Indoor fitness equipment: This fitness assistant is a convenient and effective indoor fitness equipment, which allows you to exercise your core strength in your comfortable home and achieve your fitness goals. Colour:B:Black Material:Steel + Foam Package Contents: 1 x Double -pole roller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.