Description: Ergonomically designed, the hamstring curl strap features two support bars to provide greater heel force and double the efficiency. There is a high-density soft foam-covered that is comfortable, non-slip, and protects your ankles and feet. Designed to be the perfect helper for abdominal exercises, push-ups, side presses, sit-ups, crunches, elbow presses, hip bridges, sit-ups and more, this hamstring curl strap allows you to exercise at home whenever you want. It is made of sponge and plastic material. The length of handle is about 30cm. The adjustable range of webbing is about 21-31cm. It can be used at home or in the office to shape your body, especially for those who don't have a lot of time. Item Name: Sit-up Aid Material: Sponge, Plastic Color: Black Style: Adjustable Features: Strong Load Bearing, Anti-slip, Durable Size Details: Handle Length: 30cm/11.81" (Approx.) Adjustable Webbing Range: 21cm-31cm/8.27"-12.2" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Sit-up Aid