adidas Holtanna CP LEA Winter Boot - Men39;s Synthetic-and-mesh Climaproof waterproof membrane breathes away sweaty moisture from inside while keeping you dry from external moisture and wet precipitation Full grain leather upper is highly durable and it breaks in comfortably over time Primaloft synthetic insulation feels warm, even when wet, so you won't have to fear frostbite in wet winter weather Primaloft's lightweight composition also helps to keep this boot non-bulky Outsole material utilizes a temperature-sensitive compound that grips icy, wet surfaces with ease, even if the temperature dips frighteningly low