The SideSlide works in all-weather conditions and can be submerged underwater.It is impact resistant and meets NFPA fire resistant requirements. It can be side mounted above or below the brim on most traditional and modern style firefighter helmets (including US style firefighter helmets utilizing goggles, visors and Bourkes eye protection) provided eye protection doesn inch t obstruct the light. This flashlight and helmet helps cut through smoke in structural firefighting, which helps the user operate safely and make quicker decisions.