The most popular shipping box there is! Almost half of all mailing boxes shipped use this convenient 18"x12"x12" size. The Standard BoxPak uses the same shipping supplies as the Medium: a white carton shipping box, a large inflatable air cushion which protects the bottom and all four sides, and a top air bag that completely surrounds and protects your item. Like all sizes it comes with a large laser address label and easy peel-off adhesive strips. Perfect for auction sellers, online returns, gifts… almost anything!