These envelopes are great for all letter sized documents that you need to keep safe and organized and can handle all of your important papers. Each one is made out durable, flexible plastic, features a straight flap opening and has a secure two button string tie closure. With their jet black color, these envelopes have an appearance of professionalism and ensures that your documents will never been seen from the outside. Protect your documents from dents, tears and bending while they sit in your office or get transported from place to place. Details: Jet black 9.75" x 13" overall size Fits standard sized sheets of paper 108 envelopes Straight flat opening with button string tie enclosure Plastic