Each of these envelopes have three binder holes on the bottom spine that allow them to fit perfectly into a standard sized three ring binder. Composed of thin and pliable, yet sturdy and protective plastic, these envelopes are ideal for standard sized documents that you want to store, keep safe and easily carry around inside of a binder. They reliably guard your papers again tearing, bending, stains and more. The certified VELCRO Brand Closure of these envelopes ensures that they close tightly and can be opened easily. Details: Transparent purple 9.75" x 11.5" overall size Fits standard sized sheets of paper up to 8.6" x 11.5" Sides extend up to 1" 12 envelopes Booklet with VELCRO brand closure and 3 hole punch Plastic