This self-heating belt features 108/111 tourmaline magnets to relieve shoulder muscle and joint fatigue. It provides long-lasting heat to improve micro circulation and promote blood circulation. The belt is made of breathable and soft fabric, making it comfortable to wear for extended periods. It has an adjustable hook and loop fastener strap, allowing for a custom fit. The product is suitable for people who spend long hours working on computers, sleep in incorrect positions, or suffer from neck and shoulder fatigue. It can also help improve sleep quality and maintain a better posture.