Silk / Merino Wool Eco-Printed Scarf - Multiple Colorways80% Silk, 20% Merino Wool. Leslie Burchel Fox uses all natural botanical dyes to create one of a kind wearable art. These lightweight super soft scarves are a blend of silk and wool. What is Eco Printing? Eco Printing is an ecologically conscious way of applying print and color to protein (silk wool) and cellulose (rayon cotton) based textiles. Without the use of powdered mordants which are harmful to the environment, one of a kind patterns are