The polyethylene shell is made of ultra thick polypropylene material, which is durable, recyclable, tear resistant, waterproof, odorless, non-toxic, environmentally friendly and not susceptible to cracking and deformation. Transparent and stylish folders are available in a variety of colors, so content remains visible and documents can be easily found without opening the envelope. Each envelope has a label pocket that can help you organize different documents. Portable and easy to carry, whether in schools, offices, banks, meeting rooms or at home. Quickly and conveniently organize your vouchers, tickets, magazines, documents, photos, documents, invoices, receipts, craft items, small toys, gift packaging, gift cards, crayons, pens, puzzles and much more. Welcome to use your logo.