Rototo Horizontal Stripe Crew Socks - Light Blue* Avoid tumble drying, as it may cause shrinkage. Size: M(25 27 cm), L (27 29cm) MATERIALS: 81%CO,12%PA,5%PL, 2% PU 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