Coyuchi napkins’ soft stripes are the product of a centuries-old textile tradition. To create them, organic cotton yarns are dipped in a series of pigments, creating shifts of color along each one. Woven into fabric, they create stripes that vary randomly in width, length and spacing, making each piece unique. All of Coyuchi's cotton and linen products are machine washable. For whites and light colors: Coyuchi recommends machine washing on a gentle or delicate cycle with warm water and non-phosphate soap. For dark colors: Coyuchi recommends machine washing on gentle or delicate cycle with cold water and non-phosphate soap. Line dry, or tumble dry low and remove promptly. Use a warm iron on cotton or a hot iron on linen, as needed. Coyuchi does not recommend using whiteners as bleaching agents may diminish the brilliance and depth of the colors; when needed, use only non-chlorine bleach. Please refer to the product tag for more specific instructions.