1. ABS brand new material, strong and durable, load-bearing increased by 200KG. It is easy to store and carry, and helps stretch muscles and calves, thereby preventing plantar fasciitis. The size is 28x31x10cm.2. Five levels are adjustable, suitable for the whole family. The first gear is suitable for children or beginners. The second gear is suitable for middle-aged and elderly people to exercise. The third gear is suitable for young people or those who have basic exercises. Four gears are suitable for yoga, sports, and fitness people. Five gears suitable for fitness professionals and professionals3. Comfort: The heel uses a textured surface and plastic to prevent my feet from slipping off the board.4. Relieve heel pain: Relieve foot pain caused by chronic diseases such as plantar fasciitis, Achilles tendinitis, ankle strain, and arch pain. People with knees over toes lean their skis to encourage correct foot posture for effective stretching. This stretch board also helps restore flat feet, arches, valgus, varus X-shaped legs and O-shaped legs.5. Purpose: To concentrate and stretch the arches, calves, hamstrings and hip muscles. It can be used for home, office or indoor and outdoor sports.6. Easy to use: no need to assemble. It is very suitable for men, women and the elderly. This is a simple tool, but very effective as a stretching aid.7. You can stand or sit on a chair, choose the correct posture, relax your foot muscles, and keep your office flexible, suitable for travel. Like indoor and outdoor sports, it is foldable and very easy to carry.