Essex Yarn Dyes from Robert Kaufman are a woven blend created by dying the yarns first and then weaving a combination of yarns together. It features flecks or speckles of colored yarns to give a fun little surprise upon closer examination. Woven of the same cloth as the Essex Linen you have come to know, it is made of cotton, linen and 1% polyester (to account for the flecks).