Muck Arctic Ice Series Extreme Conditions boots are designed to deliver superb grip and performance in icy conditions. The Arctic Grip Outsole pods offer advanced traction in wet, icy environments, and the multi-direction lug provides sure footing on multi-surface terrain. The outsoles feature Vibram's Icetrek full base layer for unparalleled traction on dry ice. The heavy-duty 8mm CR Flex-Foam is flexible, 100% waterproof, and has excellent heat-retention properties. A fleece lining ensures exceptional warmth and comfort.