About this item 18PCS 10×13 White Envelopes You will receive 18PCS mailing envelopes, sufficient quantity can meet your using and replacing needs. The size of the manila envelopes is 10×13 inches, suitable for mailing important papers, business documents, booklets, catalogs, brochures or storing magazines, books and more Self Adhesive Seal Our self adhesive manila envelopes have a Release & Seal peel strip, just peel off the paper strip and press down for a permanent seal. No glue and water required, no need to lick the envelopes. White envelope with strong adhesive force, keep the inner documents safe all the time Thick and Sturdy The white manila envelopes are made of 100GSM double adhesive paper, which has excellent rip, tear and puncture resistance, catalog envelopes strong, thick and opaque. Perfect for obscuring sensitive information and protecting critical documents. Ideal for for secure business mailing Printable Freely Our blank mailing envelopes allow you to print shipping labels or other custom labels via laser or inkjet printer. You can print addresses, shipping labels, letters, and graphics on envelopes without worrying about smudging or jamming. You can also DIY catalog envelopes according to your own ideas Wide Application Our seal security envelopes provide extra protection in mailing, storage and handling, These white catalog envelopes can be widely applied to most occasions, like school, office, class, meetings, banquet, ball and more, which are fitting for sending files, offers and more