Sustainable sneakers by PAUL GREEN PURE. Upper made of high-quality merino wool with vegetable and chromium-free tanned kidskin nappa leather details. TENCEL™ shoelaces from sustainable forestry and sustainable manufacturing process. Lining in breathable merino wool with padded leather insole. Soft, warm, breathable: the new merino wool material from PAUL GREEN pampers your feet with natural temperature regulation. This way they stay comfortably dry indoors and don’t get too warm. Outside in the cold, it keeps your feet wonderfully warm. Merino wool also has an odour resistant and antibacterial effect. Degradable and eco-compatible GO!Zero sole. Width "F" for narrow to normal feet.