I like these envelopes because there is no need to lick the glue. There is never a chance of getting a paper cut on your toung. The envelopes are provessional looking and do not show through. These work great in a stamp machine and in the printer for labels. These are great for sending out bills or business documents. Just stuff the envelope and pull the paper strip off and fold over. It is so quick and easy and the closure is neat and clean. It is a great buy when you can buy two and get the third one for free.