The mid-height Arctic Weekends are perfect for extreme cold weather. The fleece lining keeps toes warm and dry during any outdoor activity. Lightweight EVA midsole and durable rubber outsole are a perfect combination. Lightweight wellies EVA Contoured Molded Midsole 4mm CR Flex-Foam Light Gripping Rubber Outsole Warm Fleece Lining CR Flex-Foam adjusts to the unique contours of your foot to create a comfortable and stable foundation while resisting blisters and chafing