JAM Paper® Silver Stardream Metallic 6 x 6 Square Invitation Envelopes are made out of high quality, 32lb metallic paper. This pack contains a total of 250 envelopes. Each one of these envelopes measures 6 inches on all sides and features a flawlessly square shape! To keep the items placed inside of these envelops secure as they are carried to their designated destinations, each one has straight flap opening with a reliable gum closure. These envelopes feature a shining silver color and a metallic finish! Their cheerful, eye-catching appearance makes them fantastic for special occasion related mailing purposes.