Balance economy and function with these standard weight sheet protectors. Standard weight polypropylene means durable storage for documents and reference materials. Acid-free protection with polypropylene means no photocopy transfer. Top loading sheet protectors provides permanent storage for your materials. No sheet punching is necessary thereby keeping your documents in their original condition. Details:Clear 8.5" x 11" (21.59cm x 27.94cm)100 protectorsTop loadingNo sheet punching is necessaryAcid free