Certified Medical Face Mask bacterial filtration efficiency EN14683: 2019 + AC: 2019 ANNEX-B TYPE I> 95 TYPE II> 98 microbial cleanliness (bioburden) EN ISO11737-1: 2018 breathability (differential pressure) EN 14683: + AC: 2019 ANNEX-C 3 layer front face 100% poly back face 100% cotton washable (minimum 50 times) unlimited color options unlimited printing options