"High-quality materials: The portable sit-up bar abdominal suction cup is made of high-quality environmentally friendly rubber, no odor, large suction cup design, strong suction, large bearing surface, and more energy-saving supine posture.Ergonomic design: The thickened support bar fits your heels when you exercise, providing even support and strength for your heels and improving efficiency.Easy installation: Place the sit-up assist device on a clean, flat surface, press down to fix them, and you can start exercising your abdominal muscles!Adjustable height: The sit-up exercise bar is adjustable, you can adjust the height of the sit-up exerciser at any time to find the most suitable height.Multiple functions: The portable sit-up bar is suitable for various training methods, sit-ups, plank support, push-ups, curls, push-ups, sit-ups, supine leg raises, side leg raises, hip bridge exercises, leg extensions."