Traditionally, cosmetic trial kit has been shipped by non-standard-size mail, but due to the absence of buyers at the time of delivery, instances in which items are returned are on the rise. Considering the size limitations of Yu-Packs along with cosmetic appeal and structural integrity of box contents, we developed a package that can be delivered into a mailbox of buyer. In this way, we have managed to prevent re-delivery or returning of the package to the sender.