Features: 1. You can prepare the sit-up aid as a backup or give it as a gift to your friends, family members, girlfriends or boyfriends, relatives, colleagues, or exercise lovers, to bring convenience to them and improve your relationship. 2. There are many ways of application of the sit-up aid machine. For example, you can exercise your legs by securing them with a bed plank. By exercising, you can keep fit and be happy. Specification: Product name: Simple sit-up aid Product material: high-density sponge + nylon webbing + metal material Packing List:1x Abdominal fitness device [Lightweight Compact]: Nordic hamstring curl strap can be used at home or in the office to shape your body and trim your waist. Also very suitable for travel. The perfect gift for people to have a healthier life, especially for those who don't have time to work out in the gym or gym [Stable and Non-slip]: The center sit up bar of the hamstring crank strap is made of steel to provide maximum stability and control. Thicker with curved non-slip high-density padded foam pads provide comfortable foot or ankle support. [Ergonomic Design]: High-density soft foam covering the handle is comfortable and non-slip while avoiding ankle injury. Sit up equipment with double-row support bars strengthen heel force, exercise more efficiently and balancedly, and help you become a perfect body. [Adjustable Strap to Use]: The hamstring curl machine is easy to use, allows you to adjust the strap for a better fit or comfort; When using, just adjust the sit-up aid strap, make this equipment under the door, close the door and put your feet or legs in, letting you enjoy your sit up workout quickly [Multi Purpose]: Our hamstring exercise equipment has a wide range of applications, can be applied in sit ups, squats, ab workouts, core training and other exercises, suitable for adults, youth and other fitness enthusiasts