1. Material: Premium quality water-resistant plastic material, no fear of damage from rain and water. 2. Suitable for letter and A4 size paper. 3. Reference index label, classified data storage and color index label paper. 4. The envelope has multiple pockets for easy organization of papers and documents. 5. The zipper closure ensures your papers stay in place. Specification: Sheet Size: A4 File Size: 35cm x 27cm x 3.5cm/13.78inch x 10.63inch x 1.38inch Closure Type: Zipper Color: Black Material: Plastic Package Contents: 2 x Expanding File Folder Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.