The envelopes are ideal for storing and organizing your pens, markers, memos and other small items! They're made of sturdy and durable plastic. They feature three holes that correspond with a three-ring binder and will allow you to keep your papers and your envelope of essentials all in one place. Each one is clear and translucent, enabling you to see what you need without opening it up first. Details: Clear 6" x 9.5" #10 wallet size booklet envelopes 3 holes to fit in a 3 ring binder Set of 24 Zipper closure Plastic