Specification: Features: Exercise equipment: The hamstring curl belt is the perfect waist and abdomen exercise equipment. By placing your feet on the floor and maximizing the activations of the cores flexors of the abdomen and buttocks, you can practice better sit-ups. Our hamstring exercise equipment is widely used for sit-ups, squats, abdominal exercises, cores exercises and other exercises suitable for adults, teenagers and other fitness enthusiasts Adjustables: The strap is adjustables in length and can be used in many ways for most types of beds, doors or other suitable places. Light and small: It can be used at home or in the office to shape the body and trim the waist. It is also very suitable for traveling. This is the perfect gift for people to have a healthier life, especially those who do not have time to work in the gym or gym. This is an ideal portable training device, saving time and money. No assembly required. It39;s easy and fast, just one minute to start training. Can be used on the door or bed again, very suitable for folds. Wide application: leg rolling machine can be used for various purposes. For example, you can use the bed board to fix it to exercise your legs. Through exercise, you can exercise and get happy. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Size: about 30*7cm Package List: 1x Portable Sit-Up Aid