Stretchable hamstring curls with bed sit-up aid door sit-up aid exercise equipmentAbout this project To train your hamstrings alone and help solve the lack of training tools; you can also roll them up in a bag or pocket and take them wherever you want; A GOOD EXERCISE TOOL: This hamstring training machine is durable enough to help you train your leg muscles, activate and your legs for strength, and let you fully enjoy outdoor sports such as running; whether you are You can use your hamstrings with the help of a door, at home, when traveling or anywhere else that has a door; CHOICE OF USEFUL MATERIALS: Made of faux nylon, this leg exercise belt is sturdy and durable, easy to wear, break or discolor with long-term use; the foam straps are free to stretch and fit your legs perfectly, there is no risk of injury to the body; APPLICABLE TO A VARIETY OF SCENES: These straps are perfect for home, gym and more, convenient for you to exercise on a flat or standard exercise table, great tools for men, women and children; they can also be gifts for your, family, colleagues, fitness Great gift for lovers etc.Specification: Material: nylon cloth Size: 30X31cmProduct list: 1X sit-up aidNotes: Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Thanks! Due to manual measurement, please allow a slight measurement deviation.