These 3 x 3 x 3 inch kraft corrugated mailers are built from ECT-32-B single wall corrugated board and engineered for tape-free closure. The one-piece design folds shut without tape, glue, or staples — and the folded structure naturally creates double walls of corrugated protection on the front and sides, adding crush resistance without increasing package weight.

The compact cube format suits e-commerce fulfillment, retail distribution, subscription box operations, and manufacturing environments shipping small, rigid items such as cosmetics, hardware components, sample kits, and collectibles. The flat-pack profile stores efficiently on warehouse shelving and fulfillment station benches alike.

Each mailer weighs approximately 0.087 lbs, helping minimize dimensional weight charges on high-volume outbound shipments. Sold in bundles of 50 and parcel-friendly for standard replenishment orders.