The Derwent II boots from Muck Boots have a uniquely bobbled moulded outsole with an aggressive tread pattern that emphasises stability. The comfort topline allows the boot to cling comfortably to your calf and the boot carries a reinforced toe and ankle to provide you with extra protection. This boot doesn\'t compromise on functionality or comfort in its pursuit of delivering a great field boot option., 4mm CR Flex-foam., PK Mesh Lining., Comfort topline., Reinforced toe and ankle., Rubber outsole with aggressive tread pattern.