Under Armour Men's UA Tradesman Boots Synthetic ColdGear Infrared uses a soft, thermo-conductive inner coating to absorb and retain your own body heat Durable, oiled, rich full-grain leather is naturally waterproof and protective Ultra-breathable lining for superior comfort and ventilation Molded OrthoLite sockliner is designed with a memory foam top and rebound foam bottom EVA heel cushioning for added comfort and shock absorption where you need it