Normal waist, cotton jeans with a slit detail and an adjustable, elasticated waist - Slim Jeans | Enjoying the company of all little free spirits, Koton Slim Jean is appreciated with its slit detail. Indigo Product Usage Information: The indigo dye used in our product may color your clothes a bit during use. We recommend that you wash it inside out, on its own for the first time, and then wash it inside out with colored clothes in subsequent washes.