These 3" x 2" x 2" white corrugated mailers are built from ECT-32-B corrugated board and fold into a fully enclosed mailer without tape, glue, or staples. The one-piece self-locking structure assembles in seconds, and the white exterior maintains a clean appearance through the shipping process.

The compact dimensions make these mailers well suited for jewelry, USB drives, small cosmetics, medication samples, and other lightweight retail or e-commerce items requiring a rigid enclosure. Fulfillment centers, subscription box operations, and direct-to-consumer brands use them for daily outbound mailing programs where speed of assembly matters.

When folded, the structure produces double-wall thickness along the front and sides, adding compression resistance during transit. Each unit weighs approximately 0.05 lbs, keeping added shipment weight negligible. Bundles contain 50 mailers and store flat, requiring minimal shelf space in high-SKU fulfillment environments.