Stay organized with the Oxford Envelope Binder Accessories. Use the three-hole punched edge to clip into a binder for easy storage and convenience. The three-hole punched strip has a flexible edge on the envelope side to make this product easy to use and manipulate. The envelope is clear so you can see its contents.This binder envelope is sturdy to prevent wear and tear or moisture damage. It can hold a variety of materials. Use it to organize materials for hands-on activities, worksheets for various lessons, items for your bulletin board, invoices, and all kinds of work related documents. The large pocket holds up to 150 sheets of paper. The smaller extra outside pocket can be used for business cards, notes, or those hard-to-organize receipts teachers will want when tax time rolls around. This product is for anyone who uses binders to organize their documents. Teachers of all grade levels can use this to help them stay organized. The large envelope would be a great place to store bulletin board accessories, copies of documents, or frequently used forms. Specifications for the Oxford poly folder envelopes: