"Exit" Label by SmartSign | 10" x 14" Glow-in-the-Dark Laminated Vinyl DURABLE VINYL. Made of 9 mil thick vinyl and GloBrite safety grade flexible photoluminescent film. Labels last 2+ years outside. COMPLIANT. Safety grade photoluminescence meets ASTM 2072, DIN 67510 and IMO RES A. 752 specifications. INSTALLATION. Labels stick to most of the flat or curved surfaces and can be used indoors or outdoors.