Waterproof, warm and practical - Everything you need in an all purpose outdoor boot! The Muck Boot Derwent II has been made using 4 mm CR Flex-Foam, which is a specialised Neoprene material that is flexible, heat-retaining, and 100% waterproof. Features also include an inner PK Mesh lining which helps prevent your feet from getting uncomfortably damp whilst sweating, reinforced areas on the toes and ankles, along with substantial treads for extra grip on uneven terrains.Derwent II Boot Features100% waterproof outdoor boot4 mm CR Flex-Foam lining for additional warmth and protectionPK Mesh lining to help keep you dry and comfortableDefined tread pattern on the soles for extra grip and supportThe toes and ankles have been reinforced with an extra layer of rubber for further protectionFixed pull tabsSuitable in temperatures that range from 0 to 18Muck Boot\'s Ref.MPN: DWT-333T, DWT-000Colour: Moss and BlackSizes: UK 4, 5, 6, 7, 8, 9, 10, 11, 12, 13PM Ref. 958987