Large Capacity Plastic Folders - Our folders measure 13.25 x 9.25 inches and hold over 100 sheets of Letter A4 size paper. Thickness Upgrade (0.18mm) - Our reusable envelopes are thicker than other polyethylene envelopes on the market and are durable enough to protect your paper from damage. ACID-FREE AND WATERPROOF - Made of high-quality plastic material, our plastic folders are perfect for organizing important papers. Folders - Transparent folders with various colors to keep the contents visible and make it easy to find documents without opening the envelopes. Organize Folders with Tab Pockets - Keep your things organized for school, home, work, office, travel and business trips. Unique label pocket design facilitates easy sorting and identification of documents.