Your cards and envelopes are treated like royalty in our B77 Crystal Clear Flap Seal Bag. Designed for a square product, our B77 flap seal bag measures 7 7/16" x 7 1/4" and fits a single square 7 1/4" envelope or card. This bag also fits any 7" x 7" product, including art, photos, prints, backing or mats up to just over 1/4 inch thick. The material is made from 1.6 mil BOPP for exceptional clarity and durability. This sleeve protects your product from dust, handling and fingerprints. The adhesive strip is on the flap, so you can adjust the bag by folding the flap over and securing a snug fit. Archival safe and acid-free.