Made of 0.046 in. PVC, Glow-in-the-Dark Signs ensure that critical information can be seen by building and vehicle personnel in event of emergency such as power failure or building filled with smoke during fire. Signs glow brightest for first 60 minutes then fade to remain lightly visible for several hours in total darkness. Peel and stick Glow Floor Decals are also available in circles, arrows, and strips that conform to curved surfaces and are slightly textured for anti-skid surface.