Muti-functional: Exercise your arms, shoulders, back, legs, abdomen, waist or other muscles of the body, a variety of training methods for small equipment waiting for your development. Highly adjustable: Suction sit-up bar can adjusts to three different height, just have one to fulfill the training requirement of your whole family. Upgraded quality: Padded foam-covered ankle bar ensures maximized stability, control and comfort. The sit-up equipment's two large suction cup made of natural rubber which is durable and long life. Compact and portable: It can be used at home or in the office to shape your body and trim your waist. Also very suitable for travel. A variety of fitness methods,for different parts,where to thin where to practice. Easy installation: quickly to set in few seconds and effortless, can apply to any kind of ground. Just press the spring buckle inward to adjust the height of the crossbar, press the button up or down to release or fix the suction cup.