The buckle uses silver components, simple and fashionable. Built-in 6 magnets with a maximum magnetic flux density of 200mT. Magneloop improves blood circulation in the neck and shoulders. Extensive magnetic penetration. Effectively relieves muscle soreness and tension. Can be washed. 100% waterproof. Drug-free and odorless. Lightweight, soft and easy to wear. Can be worn anytime, anywhere.