1. You can use them to intensify your muscles and build an ideal figure! Features: Sit up bar Small size, not occupy space, light weight for easy storage. 2. Fitness at anytime and anywhere With this sit up equipment, you can exercise whenever you want at home, office, not only in the gym. 3. A button switch, start three seconds. Waterproof and moisture proof, safer to use. Self-Suction Thick soft foam, soft and comfortable without hurting the feet. 4. Sit up equipment Four gear height, free to adjust. Through the spring snaps freely adjust their comfort level. Suitable for the whole family. 5. Sit up suction The diameter of rubber thickened double suction cup reaches 8.66 inch to provide a larger suction cup area and higher stability. 6. Play belly movement, stretching back, plank, press-up, etc. Compact design, s-shaped curve, easy to carry, easy to use. 7. It's perfect for home-based strength training. Upgrade bottom rubber sucker of this sit up bar, provide strong suction, more secure and stable. 8. How to use: Step 1.Choose smooth ground Step 2.Clean the floor suction cup Step 3.Sucker installation Step 4.Height adjustment