Specification: 5 Layers N 95 Face Mask: Layer1- Non-Woven 60 G, Layer2- Melt-Blown Woven 25G, Layer3- Hot Air Filter Cotton 25g, Layer4- Melt-Blown Woven 25G, Layer5- Skin Friendly non Woven 25 g. CE certified & ISI Standards - It can be use multiple times after wash. ONE SIZE FITS ALL: Its stretchable ear loop straps can be adjusted to meet all head sizes while so it won't hurt your ears or nose during extended hours of wearing. Ideal for men, women & adolescents alike. LIGHTWEIGHT MATERIAL - Made up of soft & super light NON-WOVEN & MELT BLOWN material that does not cause any irritation even after prolonged wearing. N-95 FACE MASK WITHOUT FILTER VALVE - filtration efficiency more than 99% of 2.5 PM. Protects your face, nose, mouth, against dust, smoke, ash, pollution and other particulate matter in all weather conditions.