Robust design of glass and housing: it adapts well to faces of different shapes and sizes, maintained the form properly during use, and is resistant to deformation layer of carbon: offers protection against nuisance levels of organic vapors (below the value (threshold limit, TLV), straps with color - coded, easy to recognize thanks to with color coded straps - performance level yellow: FFP1 depending on 149:2001 + A1:2009 Compatible with: eye protection 3 M, 3 M Compatible with hearing protection: Eye protection 3M, hearing protection 3M belts with colour coding: performance easy to recognize thanks to color - coded - blue belts: according to in 149 FFP2: 2001 + A1:2009 design comfortable, light and separate the face due to their convex, nose clip and its design of two strips, adapts perfectly to a wide variety of sizes of faces. The specialized 3M™ 9913 mask offers protection breathing...