About this item Large Envelopes 10 x 13: Yellow kraft envelopes come in a set of 100, measuring 10 x 13 inches, with a sturdy box, professional look, and nice feel; the catalog envelopes can be easily addressed or labeled, and the self-sealing design is a great time saver for your household, office, business, legal mailing and more Envelopes Self Seal: The self seal Envelopes with a strong adhesive are easy to peel and seal, just peel off the strip and seal the flap; no licking or moisten required, creating a convenient and fast experience in multi mailings Privacy and Security: Our 10 x 13 mailing envelopes are made from 80 GSM golden kraft paper stock with excellent tear, rip, and puncture resistance; not easy to see through the inner contents and protects the privacy of your items Convenient Storage: Goefun catalog 10 x 13 envelopes are packaged in sturdy boxes for safe storage to prevent damage in transit; large quantities of envelopes can be supplied for bulk mailing, office filing and organization Widely available: Large envelopes are perfect for mailing or storing business documents, letters, manuscripts, photographs, invitation cards, brochures, magazines, catalogs, books and multiple paper projects; even enough to accommodate more than 30 sheets of thick paper