7 gears are adjustable: 1-2 gears are suitable for children or beginners, 2-4 gears are suitable for middle-aged and elderly people and people with a little exercise foundation, 4-6 gears are suitable for fitness people, and 7 gears are suitable for fitness experts and professional fitness people.Non-slip design: There is a horizontal pattern on the stretcher, which has an non-slip effect and can protec-t the heel and calf muscles from injury.Material: Made of ABS material, easy to clean, no deformation, no shaking.Multiple methods of use: You can stand on the stretcher or sit on a chair, choose a suitable position and relax your muscles.Portable: The stretcher is light and handy, very suitable for home, office, travel and indoor and outdoor sports use, foldable and very convenient to carry.