Hytec JS211 N95 Mask is designed to achieve a very close facial fit and very efficient filtration of airborne particles. Made with 5 layered filtration with Meltblown layers of 40 gsm and innermost layer of Hydrophilic Spunbond layer of 25 gsm which absorbs sweat and moisture. Edges of the respirator are designed to form a seal around the nose and mouth. Offers up to 95% bacterial filtration efficiency.