Krystal Seal Bags traditionally come with resealable adhesive strips on the flap, allowing them to be folded and sealed over the opening of the bag. Easy to use, just insert an item, peel off the adhesive cover strip and then fold and press the flap onto the bag to seal it. The flap seal allows for items to be smaller than the height of the bag as the flap can be folded past the opening of the bag allowing for a snug fit. Clarity • High quality material will not easily rip, tear, wrinkle, or fog • Adhesive on the flap allows you to customize the fit • Acid and Lignin Free • Archival Safe • 1.6 mil thickness • 10% Recycled Content • 1/16” size tolerance • Bag sizes indicates the opening side as the first dimension. 25 bags per package.