Superior technology micro, Fine filter media protects micro, Fine respirable suspended particulate matter higher dust holding capacity doesn t let the filter clog thereby increasing the respirator s life mutiple shells the design aids use for multiples shifts lasts longer elastic sewn outside filter area leakproof avoids puncture stay cool butterfly vent valve provides breathing comfort and promotes easy communication effectively removes heat build, Up unique fit adjusters provides optimum protection & comfort color coded fittings allows easy identification denotes the degree of protection polyamide back plate chemical resistant head resistant light weight & flexible anti, Static