7X10 ALUM-CAUTION HARD HAT

FireFly^® Signs
Glow-in-the-Dark, Reflective Signs are Highly Visible Under Almost Any Conditions
These signs have bright fluorescent colors. They are made of highly reflective materials. Signs glow in the dark up to five times longer than other glow-in-the-dark signs, which usually fade after only an hour. basically, they can't be missed! They're visible in virtually all conditions--so if you really want your message to be noted, these are the signs for the job.
Specifications: These are still highly visible after an hour with a luminous density of 70mcd. Prismatic reflective material reflects brighter than standard reflective surfaces. Fluorescent pigments are seen 75% sooner than conventional colors.
Please Specify Material: AS (aluminum), SL (self-adhesive).