• The outer layer is made of 100% polyester woven fabric with water repellent treatment.This layer can prevent the absorption of water particles and droplets, which serves as a crucialfirst step in preventing the contraction of the disease.• The middle layer is spunbond meltblown spunbond (SMS) 15g/m2.This layer is developed as a way to prevent pollution and dust particles.• The inner layer is interlock 100% Polyester 30D/36F and has antibacterial treatment.The layer itself is iSYS AG™ silver nanoparticles based and also has a wicking function thatallows absorption of sweat. This layer employs an active ingredient that protects the masksand halts microbial growth. This way, odor buildup is removed and restrains the propagationof germs with comfortable breathability and keeps dry conditions when you wear a long time.