Developed with versatility in mind, the Arctic Outpost series delivers all of the protection and comfort Muck Boot are known for. These boots feature 5mm CR Flex-Foam, a fleece lining, and a new EVA midsole for comfort and support. The aggressive traction outsole provides excellent grip, and the upper is made from Flex Foam with a Fleece lining and EVA sole. Care instructions: Clean with cold water and use rubber boot care. Heel height is 5.0 cm. These are pull-on wellington boots with a round toe shape and a mid-calf shaft height.