Waterproof, highly wear-resistant, dust, wrinkle, scratch, friction and damage, great for storing and transporting important documents, and protect fragile items like old newspaper and files. Effectively protect your important documents. It is more convenient and time-saving to open and close the poly envelop folders. Sealed nicely on both sides and use-friendly snap closure, well prevent documents from falling out. Our envelop folders are portable to keep your items organized and help you sort the clutter. The plastic envelopes not only can be used to store bills, documents, finance statement, materials, but also be used for storing stationery, travel materials, makeup items, etc. Quantity over 10000 ship by sea.