Acco/Wilson Jones 21437 Poly Sheet Protectors, Easysnap, 8-1/2'' x 11'', 10/PK, Clear, WLJ21437, WLJ 21437, After poly sheet protectors are snapped into binders, sheets can be easily changed without removing the protectors from the binders. Sheet protectors open at both tops and sides to make adding and removing sheets even easier. Great for papers that need to be changed frequently. Nonstick poly won't transfer toner, so documents stay smudge-free. Sheet protectors are made of heavyweight 3.2 mil clear polypropylene that is acid-free for archival purposes. Great for storing and scrapbooking. UPC Code 078910214374, Quantity 10/PK