Comfortable, waterproof and very warm Winter and snowdeep. But also as Outdoor / trekking / and Hiking , an absolutely reliable shoe that keeps your feet warm and dry in any weather and activity: - Upper material of the ankle boots: off water-repellent suede and synthetic - With TimberDry™ - technology: These waterproof membrane makes the shoes absolutely waterproof - With unique 400G Primaloft® Insulation. A pressure-resistant material that retains its functions and so itself optimally