1、Foot Pressure Assistant: The end hook thickened thread design can be hooked firmly to the bed board to ensure that it will not slip out or move during the exercise, allowing users to perform sit up training with greater confidence. 2、Easy to Install: No assembly is required and it is quick and easy to use. It only takes a minute to open and is easy to operate, making it easy to complete sit up training. It not only saves time, but also effectively improves the training effect. 3、Portable: Compact size and light weight, easy to carry and store, you can exercise anytime and anywhere. Whether you're at home, in the office or travelling for business, you can take this sit up aid with you to train. 4、Material: Made of encrypted nylon woven belt, washable and cleanable, with long lasting durability. Foam support frame is designed to be load bearing, stable and reliable. Reusable and able to handle training needs in a variety of different environments. 5、Comfortable: Made of thickened foam material, it can effectively relieve the force during exercise, making the workout process safer and more comfortable, reducing the pressure and discomfort on the body during exercise. Item Type: Curl Strap Material: Foam, Webbing Size: Approx. 30cm / 11.81in Adjustable Strap Length: Approx. 30-50cm / 11.81-19.69in Application: for Sit ups, Deep Squats, Abdominal Exercise, Core Training 1 x Curl Strap