Arc Flash Hood 40 Cal Lift Front, Faceshield, Flash Light with Mounting Clip, Slotted Adapter and Hard Hat National Safety Apparel GMCR Uneven Raised Finish: The surface Uneven Raised Finish: The surface of the glove is chemically treated to cause an overall matte finish with irregular etched grooves Respirable breathing air is supplied from a clean air source like a compressed air tank or fixed line and can be cooled by up to 52°F (29°C) or warmed by up to 33°F (18°C) with the C40 Climate Control Device while keeping the visor free of fog Vents provide fresh air and increased auditory capabilities DO NOT use fabric softeners or starch