Staples Poly Zip Envelope ~ Black and White Plaid (Check Size; 10.25" x 5.25") This is for a Staples Poly Zip Envelope Style: Black and White Plaid This is a check size poly envelope 10.25" x 5.25", with 1 inch expansion, and a full zipper closure mesh pouch with zipper closure Documents are not visible through the black and gray areas, with semi transparency over the white lines!!! Great for use with accessories, as a pencil pouch, or for storing documents!