I used these on our mailbox. They were very easy to apply. I liked having the top plastic while applying them and then peeling it off. Made it a nice smooth letter. They are just the right size and are bright. I can’t comment on their longevity as they have only been on for a few weeks. So far, so good!Update: These have been on my mailbox, which is in all the elements (wind, rain, sun…), for 3+ months and look as good as the day I put them on!