JAM Paper® #7 Coin Envelopes are great for sending, storing and organizing. These striking black 3 1/2" x 6 1/2" envelopes can be used for sending unique invitations, greetings and announcements that will have recipients doing a double-take upon receiving! Between their unique shape and size and eye-catching color, your mail is certain to be seen and far from the junk pile. Double usage by using to collect small items such as jewelry, coins, money, deposit slips, and checks. Not only will your items be in one place, but helps clean up messy workspaces at home or in the office! However you choose to use, our envelopes promise high quality performance. This pack contains 50 black envelopes. Each envelope is made of 24 lb. paper, has a round flap, open end opening, and smooth finish.