Muck Boots Derwent II Mens Tall BootsWith an MS2 Bobbed, moulded outsole for an aggressive tread pattern the Derwent II offers quality, functionality and comfort in one product. 4mm CR Flex foam PK Mesh Lining Comfort topline Reinforced toe and ankle waterproof Rubber outsole with aggressive tread pattern Temp rating 0C to 18C CR Flex Foam adjusts to the unique contours of your foot to create a comfortable and stable foundation while resisting blisters and chafing Estimated boot height