Bennon File Folders Expandable Clear A4 25 &times; 33.2 &times; 3 Cm..3 pieces Made of high-quality plastic-type clear surface. With a string tie. To prevent documents fall during use. With special type of plastic. Water proof and prevents scratches very well. Maximum expand 3 cm. Suitable for documents to A4. 25  33.2  3 cm.