12x4x3 Shipping Boxes: The package comes with 40 packs of 12x4x3 shipping boxes, perfect for shipping small lightweight items. Mailing Boxes: Shipping boxes are made of recyclable kraft corrugated cardboard, strong enough to ensure safe shipping of your items. Shipping Box for Small Business: The 12x4x3 shipping box is universal and suitable for small businesses to customize their LOGO for packing, moving, shipping, mailing, and daily use. Assemble Quickly: Unfold the 12x4x3 cardboard box along the folds, and seal the bottom and top with tape, it's easy to assemble shipping boxes in seconds. Packing Boxes: Create your shipping box with drawings, ribbons, or labels to wrap gifts for your family and friends. CRUGLA 40 Packs 12x4x3 Shipping Boxes Corrugated Cardboard Boxes, Mailing Mailer Packaging Boxes for Small Business