This self-warming belt is designed for the waist. It is made of high quality material, which is safe and comfortable to wear. The soft, self-adhesive belt with high elasticity is easy to put on and take off. Ergonomic design adapts to the waist that relieves pressure on the back and protects your lumbar spine. Suitable for people who suffer from lumbar pain, sciatic nerves, arthritis, soft tissue damage. Suitable for the crowd:1. People who have health problems such as protrusion of lumbar disease, sciatica and lumbar hyperosteogenity.2. People whose waist needs to keep warm. (Recommended under thin garment) 3. People who are always sitting or working in a longer standing position, such as drivers or office workers.4. Athletes or people who exercise regularly.