RoToTo Double Face Socks Undyed Cotton Inner Those That Know ROTOTO Double Face Crew Socks "Silk & Cotton" Bittersweet Beige ROTOTO COMMON RoToTo Double Face Socks Outsiders Store UK RoToTo Double Face Socks Outsiders Store UK. These double face socks have been in ROTOTOs collection since the establishment of the brand. Designed with an inspiration from mountaineering socks, the item features merino wool on the surface and undyed low count organic cotton fabric as the lining to create a soft and thick feel like a sweatshirt. The liner material feels fluffy and comfortable with a napped surface. * Avoid tumble drying, as it may cause shrinkage. Size: S(22 25 cm), M(25 27 cm), L (27 29cm) MATERIAL80%COTTON, 15%WOOL, 4%POLYESTER, 1%POLYURETHANE Made in Japan. About Rototo: RoToTo's socks are produced at a factory on Koryo Town, Nara Prefecture, which boasts the largest production of socks in Japan. They work with craftsmen and discuss "manufacturing" at the site (factory). They use a rare special knitting machine, which is limited in number in the world, an old fashioned knitting machine that has not been computerized, and a state of the art knitting machine. They will make one sock through many fine adjustments while talking directly with the craftsmen. RoToTo socks can only be completed when the knitting machine, thread, and people are united.