Our Protective Sleeves are a perfect way to store your product. The bags are made from a superior quality 1.6 Mil that offers optimal clarity and protection. Each protective sleeve comes with an adhesive strip on the bag flap to fold over for closure and are archival safe, acid free, and food safe. All bags are manufactured to be within +/- 1/16" of the size listed. Flaps are not included in sizing dimensions. On the hanging sleeves, the opening is at the bottom while the reinforced hang strip is at the top.