How long is the life span of Joymain Far-Infrared underwear?
Joymain Far-Infrared material is a mixture of mineral porcelain powder and pharmaceutical porcelain powder. The material is embedded into the fabric through high temperature melting process. It never breaks off from the clothes, never deforms, and can keep its health effects until the clothes are worn out. Even if the clothes are worn out, the parts that are not worn out still have the healthy effects and can be used in other ways.