The faceted sheave only rotates in one direction

movement and distance vision

1-100 ppm Carbon Monoxide (CO) 1-1000 ppm

combining style

ESS FIREPRO 1977 EX TWO-PIECE STRAP Ultimate Bandanna The faceted sheave only rotatesThe ESS FirePro 1977 goggle does not have the NFPA stamp. The ESS FirePro 1977 goggle series features a low profile design that prevents helmet interference and increases peripheral vision. The patented Speed Clip system facilitates quick strap adjustment, even with gloves on. All goggle components are heat and flame resistant, including the durable OpFoam face padding. The FirePro 1977 EX features the patented Snap On Snap Off helmet mounting system,