The product is an “L-shaped sock” that is knitted in one piece along the angle of the ankle when standing upright. A developer from a ski and snowboard clothing manufacturer wondered about the discomfort caused by sagging on the heel and instep of the foot when wearing a ski boot and obtained a patent. The line from the sole of the foot to the calf is knitted at right angles and the patented technology that thoroughly adheres to the shape of the foot. Four comfortable features and high functionality have been achieved: (1) a slimming of the ankle and instep, (2) reducing the feeling of pressure caused by tightening, (3) a comfortable fit for the sole of the foot, and (4) no need to tighten socks to keep them from slipping down. All rasox socks are made in Japan at factories in Kakogawa City, Hyogo Prefecture, and Koryo Town, Nara Prefecture, which have a history of a 100 years of sock production. Ordinary socks are automatically knitted into a cylindrical shape once they are put on a machine, but rasox socks need to be knitted into a special shape, so manual labor is essential at key points. Since the ankle part is knitted at right angles, more thread is used than normal socks, and it takes about 1.5 times more time to manufacture. It is precisely because the socks are made with care and attention to detail that the entire sock envelops you in unparalleled comfort. Due to its functionality and ease of use, the product is being used in various settings from sports to nursing care and appreciated by people of all ages. Enjoy a more natural and comfortable fit!