NORR11 | HIPPO CHAIR | $2,400-4,200HIPPO Chair Signed by Kristian Sofus Hansen and Tommy Hyldahl for Norr11. Fabric: large variety available (contact us to check the catalog) The Hippo series is influenced by the Hippopotamus mammal drawing upon its barrel shaped torsos. The characteristic wooden leg profile comes in four different oak finishes; natural, light smoked, dark smoked and black and the seat and back come in a variety of upholstery options.