We are an online reseller. Books/DVD/CD/puzzles, you know, MATERIAL! We reuse durable boxes whenever we can as we feel it is a good move for the environment and sometimes we need to close what was there before. There's no point in using paper (how eco-friendly is THAT?) but that small amount of tape does the job very well AND it's sticky enough to secure the edges etc. GREAT MATERIAL. I've been using it for 18 years! :0)