WORKOUT EQUIPMENT: Hamstring curl strap is the perfect waist and abdominal workout equipment allowing for you to practice better sit-up form by keeping your feet planted on the floor and maximizing core abdominal and hip flexor muscle activation.STABLE AND COMFORTABLE: A really sturdy sit-up aidThe center bar of the hamstring curl band is made of steel for maximum stability and control. ushioned 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.EASY TO CARRY & STORE: It is an efficient sports equipment, When not in use, the leg training straps can be rolled up and stored in backpacks, suitcases, You can exercise multiple types of smooth and clean floors in offices, bedrooms, living rooms, parks, etc.