Rototo places value on manufacturing that requires a lot of discussion with factory craftsmen who preserve the tradition and history of Japanese "sock weaving". Rototo start their sock making with selecting the right yarns for a design from a huge number of options, and then develop a new material that is made of a blend of selected yarns with help of the craftsmen. After that, they choose a knitting machine to use according to the type of material and the usage of the product. Their options include rare machines for specialty use, old-style non-computerized knitters and latest hi-tech machines. To make an ideal pair of socks, exchanging opinions with skilled craftsmen is as important as using the right machine depending on a product.