Scotts facemask, made with AWOGS high temperature glow material with 3M Scotchlite lettering low profile border, If placed 1/2″ just above the opening of the lens, to view the HUD, and does not block your vision. This is the BEST value in all of the fire service industry. invented in 2011 by AWOGS. Can be made in 3m Scotchlite silver, RED or BLACK reflective. Please specify in special instruction box. Certified heat test results available upon request.