https://us.wildling.shoes/products/north-wolf-rw Wool meets wool in this understated high cut – to keep feet comfy and toasty warm. The black upper with its herringbone pattern is made from 100% virgin wool sourced from our partner Nordwolle, and reflects the natural fleece color of the Pomeranian sheep whose wool was used to make it. The interior lining, which likewise comes from Nordwolle, is made from felted wool loden. It turns North Wolf into an out-and-out warmth-providing, naturally moisture-regulating, water-repellent Wildling shoe. Upper: Herringbone (100% virgin wool) – black-gray Membrane: 100% polyester Lining / mid-sole: Felted wool loden (100% virgin wool) Edging: Microfiber (100% polyamide) – black Outsole: 60% synthetic rubber containing approx. 50% recycled material, 20% cork – black