JAM PAPER plastic booklet expansion envelopes are letter-size (9.75" x 13") document holders made from smooth, semi-translucent polypropylene for lasting use. Each envelope includes a hook & loop (Velcro) closure for quick access and secure storage, and the material is moisture-, water-, scratch- and tear-resistant to help protect important papers. The product family offers 1" and 2" expansion options to handle different document thicknesses and is sized to carry standard 8.5" x 11" sheets and smaller items. These envelopes are ideal for organizing presentations, reports, photos, receipts and school or office paperwork and are designed to fit into filing drawers, desk organizers, shelves, bags and briefcases. Product line: Plastic Booklet Expansion Envelopes Hook and Loop; quantity: 12 per pack; material family: Plastic; paper weight: 80 lb (as specified).