These 7.5 x 10.5 inch poly mailers are built from 2.5 mil polyethylene with a non-perforated lip and self-seal adhesive strip, creating a tamper-evident closure that requires no additional tape or equipment. The white outer surface accepts labels, stamps, and direct ink printing, while a silver inner lining adds a layer of protection during transit.

The flexible, lightweight construction makes these mailers well suited for e-commerce apparel fulfillment, direct-mail campaigns, subscription box inserts, retail distribution, and any application involving soft goods or flat documents that don't require rigid packaging. Reinforced seams maintain envelope integrity even when mailers are filled to capacity.

Each case contains 1,000 mailers, making this a bulk-pack format for operations with consistent high shipping volume. The 2.5 mil thickness provides reliable resistance to punctures, tears, and moisture without adding unnecessary weight to outbound shipments. Cases ship via parcel carrier.