This mask features extra padding with patented moisture wicking fabric composed with differentials such as anti-bacteria; anti-odor; improved breathability and better blood circulation. The extra padding is removable and machine washable. The conducting fabric is made of top quality stainless steel imported from Europe. Waranted for 13 months against corrosion related conductivity issue. Years of experience in mask manufacturing ahead of others has made us confident that our masks will outlast any Chinese made masks!