Self-Seal Expandable Tyvek® Envelopes
Tyvek® envelopes provide superior puncture, tear and moisture protection.
- Constructed from 18 lb. olefin.
- Ten times stronger than paper envelopes.
- Envelopes expand to hold bulky items.
- Feature self-seal closure.
Loading products...
Copyright © 2026 PreferPack. All rights reserved.
We use cookies to provide essential site functionality for the shopping cart, login, and security. We also use third-party cookies for analytics and advertising, which require your consent. You can accept all cookies, customize your preferences, or reject non-essential cookies. See our privacy policy for more details.