StoreSMART Light Blue Plastic Archival Folders 25-pack - Letter-Size Twin Pocket - (R900LB25) Made from tough archival poly plastic. Design features reinforced edges and built-in stress guards" to prevent tearing. Stain-resistant--ink doesn't transfer to the folder. Interior left pocket includes a business card holder. Outside pocket dimensions: 8 1/2" x 11", crystal clear. Inside pocket dimensions: 4 1/2" crystal clear pockets on both sides. Interior folder capacity: Holds 70 sheets per side.