Item Type: Self Suction Sit Up Bar_x000D_Material: Steel + Nylon Webbing + Rubber + Sponge_x000D_Tube Length: Approx. 30cm / 11.8in_x000D_Product Weight: Approx. 793g / 28.0oz 1Reliable Material: Encrypted nylon braid, which is washable, with high elasticity. The sponge foam wraps the steel pipe support frame, which is durable and has high load. Thickened foam, soft and comfortable, no pain on the ankles. 2Strong Suction Cup: Powerful rubber suction cup can firmly hold the ground, stable and not loose, you can exercise at ease, and it is suitable for most grounds. 3Adjustable And Flexible: Strap connection, you can exercise freely. The adjustable buckle used to adjust the height, just choose your own suitable height to practice. 4Easy Carry And Store: The portable suction cup sit up assistant machine can be carried with you for exercise anytime, anywhere. It is easy to install and store. 5Perfect Fitness Accessories: The sit up bar can be used at home or in the office. It is also very suitable for travel. Also a perfect gift for relatives and friends, especially suitable for people who don't have time to go to the gym or exercise.