PVC MATERIALS - Water resistant / oil / liquid resistant and can withstand heavy objects. And they are semi-transparent, you can see the items inside, easy and convenient to use. WALLET WITH CLEAR CLOSURE - Nylon band for hanging, Convenient large storage space, can store all items documents, papers, toys, and other learning accessories, office supplies, also for travel, Organize phones, cosmetics, passports, badges and more. VISIBILITY - Thanks to its Semi-transparent component, so you can easily find and display the objects you need. Such as learning cards, small items, cosmetics, pencils, small tools, etc. STURDY AND EASY TO HANDLE - The four corners of the file bags are well designed, so that 'they will not scratch the lining of your bags or fingers. 30Pcs A6 ENVELOPE - 16 * 12cm. Ideal for filing, storage and display, office, industry, home and school.