Build A Perfect Body Curve: This is a situp assistant device designed for fitness and muscle training. Exercise every part of your body to help you build perfect abdominal muscle and a strong body. Portable: The self-suction sit up bar is light and portable, easy to install, it can be used at home or in the office to shape your body, especially for those who don't have time to work out in the gym. This is a very ideal portable exercise tool that saves time and money. Meet the ergonomics design: The upgraded sit up assistant device using ergonomic design, it perfectly fits the foot during doing sit-ups. Powerful Suction Cup: This sit-up device provides a very strong grip, ensuring that the sit-up aid will not be pulled up during your use. Easy to Install: The foot sit up bar is very easy to install at home, no tools are needed, just need a smooth and seamless floor. Please press the foam padding with one hand and then push the wrench down. Lastly, make sure it is firmly attached. Do not use for more than 1 hour each time.