This Reflective Address Decal is for short addresses - 3 CHARACTER LIMIT It comes with 1 Address Sticker that is up to 4" high x 6" wide. **Please include the numbers for the address in the Personalization Box ** This House Numbers Reflector transfer is cut from genuine 3M, Automotive Grade, Retro Reflective Safety Vinyl. This is the same reflective decal material used on police cars and fire trucks. They look like regular decals in the daylight, but at night they glow under flashlights and headlights. The Hyper Reflective Mail Box Decal is available in 9 colors! Just choose your color from the dropdown menu.