The tires are huge! Watch as he glides over sand, dirt, and snow. See the glee he has as he bounces over embankments and boings over rocks. The Mongoose Malus 26-inch fat tire bike has arrived to save you from the doldrums and put a smile on the faces of all those you pass by. Built with 4-inch tires (earning the name fat) on a supersized beach cruiser frame and there is plenty of clearance to make it rideable on virtually any terrain.