Stable and Comfortable: A really sturdy sit-up aid! The center bar of the hamstring curl band is made of steel for maximum stability and control. Thicker, curved, non-slip, cushioned high-density foam padding provides comfortable foot or ankle support, and thickened nylon webbing ensures long-time use. Adjustable Straps: The hamstring curler is easy to use and allows you to adjust the straps for a better fit or comfort. Just adjust the strap when use, place this device under the door, close the door and insert your foot or leg so you can quickly enjoy your sit-up training. Ergonomic Design: The high-density soft foam covering handle is comfortable and non-slip while avoiding ankle injuries. Crunches with double-row support bars strengthen your heels for a more efficient and balanced workout to help you get in perfect shape. Exercise Equipment: The hamstring curl band is the perfect waist and abdominal exercise equipment to allow you to practice better sit-up form by placing your feet on the floor and maximizing activation of your core abdominal and hip flexors. Lightweight& Compact: It can be used at home or in the office to shape your body and trim your waist. Also very suitable for travel. The perfect gift for people to have a healthier life, especially for those who don't have time to work out in the gym or gym.This is a very ideal portable exercise tool that saves time and money. Colour: Black Material: ABS+foam Size: about 31*48*CM/12.2*18.9*IN Product List: Nordic hamstring curl belt*1 Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed in the pictures. 2. Please forgive a slight measuring deviation due to manual measurement.