The weatherproof version: For quick and tidy lettering outside, the self-adhesive, black numbers on weatherproof film are ideal. They are always simple to read, hold firmly even in wind and weather, and can be quickly and easily stuck on a variety of objects and surfaces. Being a seasoned sticker specialist, we have an enormous assortment of useful letters and numbers in various colors and versions. Of course, Avery Zweckform's self-adhesive labels are of the highest caliber, rigorously tested, and approved by independent sources. Two sheets in a pack.