300 Bulk Pack Size #3 8.5x14.5 Poly Self Sealing Shipping Envelopes Usable 8.5x13.5

Usable Size (Internal): 8.5x13.5 — Exterior: 8.5x14.5. Tamper-Evident Security Closure: The permanent adhesive seal leaves undeniable visual evidence if the package has been compromised, boosting security for valuable goods. Minimal Dimensional Weight: The slim, lightweight profile helps ensure your parcels fit into the most favorable weight and size categories for maximum shipping rate savings. Weatherproof Co-Extruded Film: Utilizes advanced, multi-layered film technology for a strong, consistently opaque and water-resistant external shell.