With 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- Rubber outsole with aggressive tread pattern- CR Flex-Foam adjusts to the unique contours of your foot to create a comfortable and stable foundation while resisting blisters and chafing