Stretchable hamstring curls with bed sit-up door sit-up fitness equipment About this project To work out your hamstrings alone and helps solve the lack of exercise tools; you can also roll them up in a bag or pocket and take them anywhere you want; A GOOD TRAINING TOOL: This hamstring training machine is enough to help you exercise your leg muscles, activate and your legs for strength, and allow you to 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, easy to wear, break or discolor prolonged use; the foam straps are to stretch and fit perfectly to your pair legs, there is no of injury to the body; APPLICABLE TO A VARIETY OF SCENES: These straps are for home, gym and more, convenient for you to work out 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 lovers etc. Specification: Material: nylon cloth Size: 30X31cm Product List: 1X sit-up aid Notes: 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, allow slight measurement deviation.