When extra protection is needed, these 10" x 13" Tech-no-Tear Paper Out Catalog Envelopes give the assurance that your contents will be protected. They are moisture-resistant and tear-resistant and feature a secure, Redi-Strip seal. Just pull off the paper strip and press to seal. 10" x 13" size allows you to ship or store documents without folding. Outside paper material makes writing or printing easy and permanent.