RoToTo's socks are produced at factories mainly in Nara Prefecture, Hiroyu Town, Japan by craftsmen and women who have a built a deep understanding and knowledge of skills which has allowed RoToTo to boast the largest domestic production of socks in the country. Using a wide range of knitting machines from old-fashioned to state-of-the-art, RoToTo selects the method of manufacture according to their strengths and highest quality finish.

A RoToTo sock is only put into production after many fine adjustments, when "machines, yarns and people become one."