Choose JAM Paper® 4Bar A1 Invitation Envelopes to provide versatility and style for all your mailing needs. Whether you are surprising a friend with a hand-written letter, inviting guests to a birthday party, or sending documents to a business, our 30% post consumer recycled paper envelopes cater to any and every occasion. This pack contains 50 Antique Gold envelopes. Each envelope measures 3 5/8" x 5 1/8", has a booklet opening, straight flap, gum closure, is made from 24 lb. paper, and has a parchment finish.