Each one features a wallet flap with a dependable gum closure. These small envelopes are great for storing little and hard to keep track of items such as coins, earrings, beads, buttons, and the 4 shed sets of teeth of your baby dragon. They are one of your best options for sending small papers and items through the mail! Use them for Polaroid photos, and folded cash or checks. A total of 50 envelopes in contained in this pack. Use them in your home, your office, for events or promotions, and more. Try these envelopes for you next miniscule mailing need! Details:Black2.25" x 3.5" (#1)24 lb.50 envelopes Smooth, high quality paper