Our envelopes offer a durable framework for secure mailing. Designed to withstand harsh conditions, these envelopes are perfect for sending important documents that need extra protection. ✔ Size: 6" x 9", catalog style, 14 lb. stock✔ Water, moisture, tear, and puncture-resistant✔ Eco-friendlier: 100% recyclable, made from 10% post-industrial content✔ Zip Stick® for easy self-sealExperience the durability and reliability of Tyvek® envelopes. Customize yours today with our advanced tools and enjoy fast turnaround times. Perfect for businesses needing secure, eco-friendly mailing options.