Abstract: According to the invention, a ski is provided. The ski may be a longitudinal member having lengthwise edges, a convex base, and a first and second pair of undulations. Each lengthwise edge may have a sidecut portion, where the longitudinal member is thinner near a middle portion of the sidecut portion than at an end of the sidecut portion. The convex base, in an un-deformed state, may have lengthwise edges which are elevated compared to a bottom-most portion of the convex base. The first pair of undulations may be located at a first end of the sidecut portion, one undulation of the first pair per lengthwise edge. The second pair of undulations may be located at a second end of the sidecut portion, one undulation of the second pair per lengthwise edge. The undulations may be a downward depression of the base compared to proximate portions of the convex base.

Abstract: A ski or snowboard may be constructed of an elongate body having a front end and a rear end. The body further includes a core with a top side and a bottom side. At least one layer of carbon fiber is laminated to the core at the top side and the bottom side. Also, at least one metal rib extends along the core, with the metal rib being sandwiched between the layers of carbon fiber.

Abstract: Skis and snowboards are provided. The ski or snowboard may include a first tip, a second tip, and a body. The body may be between the first tip and the second tip, and may have a width and a length, wherein the width may be variable along the length of the body. The body may include a front portion, a back portion, and a sidecut length having a turning radius of between about 50 meters and about 115 meters.

Abstract: Methods for creating a piece of hard shelled footwear are provided. The method may include determining a first set of data, where the first set of data represents a three-dimensional shape of a foot. The method may also include determining a second set of data based at least in part on the first set of data, where the second set of data represents at least a portion of an exterior shape of a piece of hard shelled footwear. The method may further include fabricating a mold shape based at least in part on the second set of data. The method may moreover include fabricating the piece of hard shelled footwear in the mold shape.