Each one of these envelopes measure 10" x 13". To keep the contents placed inside of these envelopes secure, each one has a flap opening with a resealable gum closure. These open end envelopes feature a silver color that makes them appropriate for any home, office, and special occasion related mailing need!Details:Silver stardream10" x 13" eachAvailable in multiple size countsMetallic finishResealable gum closurePaper