These envelopes are made of pliable yet damage resistant plastic and are perfect for standard sized documents and papers. Their hook and loop closures ensure that they stay closed tightly and can be opened with ease! Use them to sort and protect your documents against bending and tearing. Stay organized by color categorizing your papers with this multicolor set! Never leave your important documents exposed to harm or to the danger of getting lost. Details: Assorted colors 9.75" x 13" overall size Fits standard sized sheets of paper 12 envelopes Open end with hook and loop closure Pliable Plastic