thick stickers, good adhesive
I have these perhaps letters and they're the first Basic Grey letters that I've gotten. I was pleasantly surprised with how durable the letters are, they're not easily torn like some other letter stickers are, and they have a nice matte surface, not shiny or glossy. The adhesive is good quality, I didn't have any problem with them coming off the page, but they were also repositionable if I didn't get them on in the exact right spot the first time.