📬 Elevate Your Mailing Game with Style! Crafted from 28-pound woven paper for unmatched strength. Ideal dimensions for catalogs, brochures, and multi-page documents. 100-pack ensures you’re always ready to send. Experience hassle-free mailing with easy peel-and-seal closure. Sleek white finish enhances your brand’s image. 100-pack Peel-and-seal 9x12 inches The Amazon Basics Catalog Mailing Envelopes come in a convenient 100-pack, each measuring 9x12 inches. Designed with an easy peel-and-seal closure, these durable envelopes are made from high-quality 28-pound white woven paper, making them perfect for mailing catalogs, booklets, brochures, and multi-page documents.