Quality Park Tech-No-Tear Catalog Envelope, Redi-Strip, White, 9 x 12, 100 per Box, (77390) MOISTURE RESISTANT: Moisture resistant envelopes to preserve inner contents in the mail stream REDI-STRIP: No moisture required with this Redi-Strip closure MULTI-PURPOSE: These 9 x 12 envelopes are perfect for storing and mailing full size 8-1/2x11, letters, documents, catalogs, photo's and other home and business mailings EASE: The paper surface on the outside makes the envelopes easy to write or print on GREAT VALUE: Conveniently packed in 100 count to reduce the frequency of repurchasing