8 x 3 x 3 Kraft Corrugated Mailers Shipping Boxes 50/Case: Kraft Corrugated Mailers offer lightweight yet durable protection for small fragile items like tools glassware and delicate products while helping reduce postage costs. Their crush-resistant design provides double-wall protection on the front and sides ensuring maximum safety during transit. These one-piece mailers assemble quickly without tape glue or staples making packing more efficient. Manufactured from ECT-32-B kraft corrugated they ship and store flat in 50/case quantities saving valuable storage space.