It has been over 70 years since Big John from Japan started their business as a small sewing factory in Kojima, Okayama. This city is now known as the denim capital of Japan. Big John manufactured the first made in Japan jeans in 1965, and developed the first Japanese denim fabric in 1972. The RURI fit is Big John’s original 14.5oz sanforized selvedge denim. The RURI fabric is based on the fabric of the M1002 PROTO model, which was the first jeans made under Big John brand in 1967 using the fabric imported from Cone Mills Co. The RURI is dyed with special dyeing technique in which dipping was reduced to about a quarter of normal dyeing process, creating the bright light blue color. This is a color traditionally called RURI in Japanese, named after a deep blue gem (Lapis Lazuli in English).