9x12inch Envelopes: catalog envelopes are made of sturdy 28 lb paper, featuring a robust self-seal closure. The high-quality paper is tear- and , standing up to normal postal wear and tear without damage Self-Sealing Envelopes: 9x12inch Manila envelopes are designed with ultra-strong self-adhesive tape. Simply peel off the white liner, fold, and for a few seconds to seal the envelope, ensuring the security and durability of your mail in a completely sealed environment 100 Pack 9x12inch Envelopes: You receive 100 of our 9x12inch self-sealing envelopes, sufficient to meet your needs. These perfect 9x12inch envelopes are ideal for use , office, school, and more Privacy Protection and Printing: The 9x12inch envelopes are completely opaque, with the paper material ensuring the privacy of the contents. The high-quality 9x12inch envelopes have a blank , and the envelopes can be reused multiple times, allowing you to customize them with printed patterns and text Versatile Use: catalog envelopes are ideal for mailing catalogs, magazines, documents, direct mail, paperwork, letters, invitations, photos, promotional materials, brochures, and more Color: Ginger Yellow Material: Paper Package Contents: 100pcs x manilla envelopes Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.