This is our feature for all winter enthusiasts by using Vibram® Icetrek winter proof, traction ready, and outdoor friendly out sole. Winter Soul also incorporates the highest quality full grain leather for that rich patina and unwavering durability. Adding Australian A grade sheep fur for softness, warmth and comfort. Our design can be worn two ways, with the top flap up for places with wind chill and top flap down for more rigorous activities.