Natural indigo is one of the oldest methods of bringing colour to clothes. Dutch denim brand K.O.I. (Kings Of Indigo) uses the Indigofera Tincoria plant for the coloring of their garments and for the dye process the brand works together with a company based in India. They dye in the purest form: the fabric is soaked in water for between 1 and 3 days, and then the fabric is dipped in natural indigo 4 times. With this technique you will get the most deep natural indigo tone. K.O.I. made several items this collection using this authentic method, the worker jacket ‘Jonathan’ made of 18oz canvas fabric is one of the iconic pieces. The colour came out really nice!