1、 Multiple uses: 4 proven ways to use. Train anytime, anywhere, and don't let your environment limit your workouts! Use for reverse crunches, leg raises, abdominal exercises, classic crunches, crunches, and more! The hamstring curl machine is suitable for fitness enthusiasts of all ages. 2、 Premium materials: A truly 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 high-grade nylon webbing. 3、 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. 4、 Easy to set up: The sophisticated design makes the device easy for anyone to use. Do not use this device with glass doors! 5、 Portable: It is easy to put into a backpack or suitcase, whether it is travel, business trip or going to the gym, it is very convenient. 1* Sit-up Aid Material: Textile belt, rubber, and steel pipeColour: BlackSize: 29.7cmFunction: Sit-ups, exercise the abdomen, no need to install, light and portableDesign: Adjustable size