It's like putting your feet next to a warm cozy fire when you wear the Nanook Crocs. Part of Crocs' insanely popular fur collection, the Nanook features a brushed Croslite exterior that provides the Nanook the look of suede but without any of the worries of ruining it with water. The synthetic fur liner is great for the eco-types as no animal products were used in the manufacture of the shoes. Customer feedback on the Nanook is showing that they are running small and suggest going up in size if in doubt.