This is a type of undergarment worn under clothing.
From Folcart comes this pair of Fugaku King Ghidorah boxer shorts! This pair of undies comes with an incredibly expressive and vivid design plastered on one side while the other features an enhanced image with the logo side-by-side. This particular pair is XL-sized. It fits a 92cm to 103cm waist and is made from 95% polyester and 5% polyurethane.
Please note that Japanese sizes tend to run a half size to a full size smaller than their western counterparts. Please keep this in mind and check the measurements above before placing your order.