JAM Paper Hook and Loop Closure #10 Plastic Filing Envelopes measure 5.25" x 10" each and expand in width up to 1". This pack contains an even total of 12 envelopes. Each one is made out of smooth and durable poly plastic. These envelopes have rounded flap openings and secure, easy-to-use hook and loop fastener closures. Use these plastic envelopes to store, protect and organize receipts, checks, notes, cards, and other important papers and documents. They can also be used to enclose small office and school supplies such as scissors, pens, and pencils! Use them in the classroom, your work space, or at home.Details:Available in multiple colors5.25" x 10"Hook and loop closure12 envelopes per packPoly plastic