These envelopes are perfect for keeping all of your larger important documents safe and organized. Whether it be financial reports for the office, the records of your employees, or drawings that you are submitting for art class, this envelope can reliably and conveniently protect them all. Each one is made of a durable, flexible plastic and features a straight flap opening.Details:Blue12" x 18" each12 countButton and string tie closurePliable and durable plastic