Each one of these envelopes measure 5.5" x 7.5". To keep the contents placed inside of these envelopes secure, each one has a commercial style flap opening with a resealable gum closure. These open end envelopes feature a white color that makes them appropriate for any home, office, and special occasion related mailing need!Details:White5.5" x 7.5" eachAvailable in multiple size countsResealable gum closurePaper