500 Pack 9x12 Premium Plastic Flat Poly Mailers – 1.7 MIL Strong & Tear-Resistant

If you ship a lot of stuff—clothes, books, small accessories—you’re gonna love these poly mailers.

This is a bulk pack of 500 envelopes, each 9x12 inches and made from 1.7 MIL thick plastic.

They’re strong, lightweight, and water-resistant, so your items stay dry and protected during transit.

The self-seal strip makes packing quick and easy—just peel and press.

No tape needed.

These are perfect for e-commerce sellers, small businesses, or anyone who wants to streamline their shipping process.

The bright white surface is also great for writing addresses directly or slapping on a shipping label.

Brand new from Shop4Mailers, and ready to ship out today.

Save time, save money, and keep your packages looking professional.