Neoprene belt with Velcro closure with magnets and tourmaline gaskets. Made with self-induced thermal technology. Promotes muscle and joint relief and relaxation of the back. It is a product suitable for use under clothing during the day. Suitable for all skin types. *For hygienic reasons, we do not accept returns of this product once opened. It can only be returned if it retains the seal, and provided that the box shows no signs of having been tampered with.