Our 3 ply-reusable cloth masks (a poly-propylene filter sandwiched between two cotton cloths) are made with keen craftsmanship & in a hygienic fashion. The 3 layers make our masks have an almost 70% efficiency rate, which is pretty descent for a non-surgical mask. Another benefit includes the fact that they are re-usable. After 3 uses just wash, dry and wear. Our masks feature a Male, Female & Kiddie option.