1、1. Ergonomic design: The product is ergonomically designed, the handle is comfortable and covered with soft sponge, which is comfortable and non-slip, and prevents ankle injuries at the same time. The sit-up equipment with double row support bars enhances heel strength for a more efficient workout, better balance and a perfect fit to help you get the perfect body. 2、2. Adjustable: Our products are the perfect waist and abs exercisers, allowing you to build a better physique by placing your feet on the ground and maximizing your abs and hip flexors. Product 10-70cm/3.9-27.5, adjustable. 3、3. High-quality material: Very sturdy sit-up aid. The center bar of the knee tendon crimp band is made of steel for maximum stability and control. Thicker curved, non-slip, high-density padded foam padding provides comfortable foot or ankle support. 4、4. Easy to install and use: Train anytime, anywhere, don't let your environment limit your workouts! Use for reverse crunches, leg raises, ab workouts, classic crunches, crunches and more! Each hamstring curler comes with an illustrated user manual, cleverly designed to make the device easy for anyone to use. Please refer to the manual for installation. Do not use this device with glass doors. 5、5. Lightweight and portable: This is an efficient weight-loss aid that saves time and money, it's easy to put in a backpack or suitcase, and it's very convenient whether you're on a business trip, business trip, or going to the gym. Material: sponge, nylon webbing, metal Design: Adjustable size Size: The length of the drawbar is about 29.7 cm / 11.6 inches Color: Black/Pink/Green/Orange Function: Sit-ups, exercise the abdomen, no need to install, light and portable 1pcs* Abdominal Slimming Device(1*Pressing Bar, 1*Fixing Frame, 1*Door Buckle, 1*Hook, 1*Mesh Buckle, 1*Webbing Belt)