Orgakiddy Black Surgical Mask Medical High Filtration EFB 98% 50 Masks is a black 3-ply mask, single use.This medical device covers the mouth and nose and provides a barrier to minimize direct transmission between two people. It is composed of three layers: two layers (outer and inner) of non-woven material and an intermediate filtering layerDimensions: 175 mm x 95 mm.It is insulated by filtration. This mask allows a great respiratory comfort, it is provided with elastic bindings and an adjustable nasal bar.High Filtration EFB ? 98%European standard : EN 14683-2019 TYPE IIR Medical device Class 1.