It is not a medical or clinical face mask and as such should not be used for this purpose, it should not be used under any circumstances where infection level is high and in any exposure to high level heat sources or combustible substances 2 Layers of single jersey with antimicrobial and water repellent finish 5 Pack With inner loop option for fit adjustment Silvadur™ 930 Antimicrobial finish on outer which inhibits the growth of microbes to offer protection, durability and freshness Zelan™ R3 water repellent finish on outer fabric layer Shaped fabric face covering Soft cotton fabric that is designed to be worn over ears to keep in place and fit close to the face Washable to 60 degrees