Postal services enforce restrictions on how large packages are allowed be for Air Mail and SAL, as a part of their efforts to control costs that affect postage.
On the other hand, manufacturers of many products such as anime action figures do not necessarily take this into account.
Because of this, some products prove to exceed size restrictions when they become available for shipment, because there is no packaging box in existence that would fit them perfectly.
So, we investigated a large number of different products and their sizes statistically. Then we custom ordered packages boxes so that more products fit in them perfectly so that size restrictions are not exceeded as frequently as it used to be.