Exercise at home: The sit up exercise equipment can be adsorbed on various smooth floors, such as ceramic tile floor, marble floor, and smooth wood floor.It cannot be used on concrete floors. Strong suction:The suction cup of this sit up assistant device is made of rubber, unlike other products, which use ordinary plastic.The rubber suction cup ensures strong suction, so that this situps equipment can be stably fixed on the floor. Ergonomic design:High-density soft foam covering the handle is comfortable and non-slip while avoiding ankle injury. Sit up bar with double-row support bars strengthen heel force, exercise more efficiently and balancedly, and help you become a perfect body. Multifunctional and adjustable heighThis sit up foot holder supports a variety of sports modes and can be adjusted in height. Suitable for men, women and children.You can perform push-ups, abs master, planks, yoga, buttocks bridges, sit-ups, stretching, and other exercises. Easy to install: Before installing the sit up machine, you need to find a smooth floor and clean the dust from the floor and suction cups. Place the suction cups on the floor, press them to exhaust air as much as possible, and then press the exhaust switch on the equipment to complete the installation.