This item has limited availability at this time. Please contact us for large orders, an alternative or to place a backorder.br> br> Recommended for a single 6 1/4 square envelope or card, or for a 6x6 product, art, photo, backing or mat up to just over 1/4 inch thick. Our top selling Crystal Clear Flap Seal Bags are ideal for art, photo, stationery, bulk mail, craft & hobby, and just about anything else. These bags have optimal clarity and durability. Adhesive strip is on the flap. USPS Approved.