The surface fabric is made of coloured cotton, while undyed silk is used for the lining. To bring the best out of the advantages of silk, such as moisture absorbency as well as heat and moisture retention, the liner fabric is finely knitted with a pile surface.

The sock production in the northwestern part of Nara Prefecture is thus originated from the area’s centuries-long tradition of the weaving industry. And that is why Rototo places more value on manufacturing that requires a lot of discussion with factory craftsmen who preserve the tradition and history. Rototo’s socks can be made only with a combination of the right material, the right machine and craftsmanship. They aim to preserve the tradition inherited from their ancestors.