Expansion Poly Mailers White - 3 Mil Thick - 15" x 20" - 13500 Pieces = 135 Boxes (Full Pallet)

Gusseted bottom for bulky products Puncture resistant, tamper proof, & waterproof Provides excellent protection during shipping

Expansion Poly Mailers are the perfect solution for shipping bulky or larger items. Equipped with a gusseted bottom, these mailers expand allowing more room when shipping books, binders, and more! These mailing envelopes prevent punctures and tears when shipping heavy or irregular objects.

A self-sealing lip with a synthetic rubber adhesive provides a safe and secure way to ship packages. Lightweight expansion mailers reduce shipping costs compared to corrugated boxes.