The principle of the carving ski is fairly simple. The ski has curved edges so that it is narrower underfoot than at the tip and tail. This means that when it is tipped onto its edge it will bend under the weight of the skier. The further it is tipped, the more it will bend. The skis follow the curve of the edge meeting the snow and turn in a smooth arc. This arc is controlled by the shape of the ski, the amount it is tipped over and the amount of pressure on it.