Envelopes come already hole punched to allow effortless and more detailed organization of documents in binders. Store the envelopes in binders and take them out when needed. Made from high quality Polypropylene (PP) Plastic. Safe & Non Toxic. Measures 11-1/2" x 9-3/4". Expandable 1-1/4" max to fit up to 200 sheets. Fits Letter Size documents. Flap envelope with string closure. Single pocket. Transparent color allows easy inspection of the contents inside the file folder. Simply look to find the documents you need. Made with tear and water resistant poly material, documents will be secure and protected against daily use. Organize your important files, contracts, sales report, presentation, receipt, checks, assignments. Simple elegant design for work, study, travel, business, daily filing, and storing of papers. No need to worry about important documents getting wet or scratched wherever you are. Each pack includes 5 folders in assorted colors: Black, Purple, Blue, Pink and Teal.