The Winter rustic black has the all-weather features of every Blundstone boot, with the added warmth of Thinsulate and genuine sheepskin insoles to get you through the coldest spells in cozy comfort. A winterized Blundstone boot for total comfort in the coldest months. 100% wool fleece footbed, Thinsulate lining, waterproof—even the elastics! A softer look but still takes a beating like all Blundstone boots.