A snowboard, snowboard assembly, and snowboard accessory for converting a snowboard into training snowboard. There is a board and a pivot member/strip. The pivot member/strip is elongated member protruding from the underside of the board along the main axis of the board. The pivot member/strip has a base width that is greater than a width of the flat bottom of the strip and greater than a height of the strip. The flat bottom of the strip is flanked by beveled edges along each side and at the front and back. The strip is either integral to the board or is couple thereto by a coupling structure (e.g. adhesive, binding, snaps, clips). The strip has a trapezoidal cross-section. Flanking beveled edges may have an acute angle with respect to the base and/or an obtuse angle with respect to the flat bottom surface.

There is provided a snowboard attachment to a standard snowboard for riding under powder snow conditions. The snowboard attachment comprises a nose part, an elongate passage and a body part. The nose part is operable to attach to the standard snowboard for providing lift and float while riding on powder snow. The elongate passage has walls extending between an opening in a top surface of the snowboard attachment and an opening in a bottom surface of the snowboard attachment, and is orientated transverse to the longitudinal axis of the snowboard attachment. The walls of the elongate passage are configured to surround the standard snowboard. The body part is attached in operation to the nose part, and has clamp through openings. The clamp through openings are arranged to receive bolts of a binding clamp of the standard snowboard, such that the clamp through openings lie in operation between the binding clamp and the standard snowboard.

A ski having vents for venting snow from beneath the ski to a location above the ski and a modified keel that provides for greater and easier directional control over the ski relative to a conventional ski.

Provided are a sliding instrument having a low frictional resistance to the snow surface, the ice surface, or the water surface and having excellent sliding performance and a method for manufacturing the sliding instrument. A sliding instrument to slide on snow, ice, or water includes a sliding surface (1) to come into contact with the snow surface, the ice surface, or the water surface, and the sliding surface (1) has a surface roughness Ra of 1.0 m or less. A method for manufacturing the sliding instrument includes polishing a sliding surface (1) using a polishing composition slurry containing abrasives to make the sliding surface (1) have a surface roughness Ra of 1.0 m or less.

Provided are a sliding instrument having a low frictional resistance to the snow surface, the ice surface, or the water surface and having excellent sliding performance and a method for manufacturing the sliding instrument. A sliding instrument to slide on snow, ice, or water includes a sliding surface (1) to come into contact with the snow surface, the ice surface, or the water surface, and the sliding surface (1) has a surface roughness Ra of 1.0 m or less. A method for manufacturing the sliding instrument includes polishing a sliding surface (1) using a polishing composition slurry containing abrasives to make the sliding surface (1) have a surface roughness Ra of 1.0 m or less.

An apparatus for gliding over snow is disclosed. The apparatus comprises at least two decks coupled via a swivel arm. Each deck comprises a strap to receive a foot of a user, and a board coupled to the deck via a connector. The user stands on the decks to create swivel-motion with the help of the swivel arm. The swivel-motion created at the deck is transferred to the connector and to the board to create forward momentum and glide the board over the snow.

A rotating binding for a snowboard or other recreational equipment to which a user's foot is attached includes a lever having teeth at one end for engaging corresponding teeth in a disk attached to the snowboard or other equipment. Movement of the lever is resisted until an additional movement of the lever is performed in order to unsecure the lever from a secured position in which it engages the teeth within the disk. Some examples of the snowboard or other recreational equipment may include retractable fins that may be extended downward from the snowboard, or secured in a retracted position.

A snow sliding device includes a first end body on which one end of a boot is caught, a second end body provided on the opposite side of the first end body and on which the other end of the boot is caught, and a main body which is provided between the first end body and the second end body to connect the first end body to the second end body, and in which an edge surface facing the ground can be changed and selectively used. In the snow sliding device according to the present invention, an edge may be replaced from a deck or another surface of the main body may be used as the edge. Thus, when the edge is worn down, the edge may be replaced or another surface may be used.

An active suspension orthotic support system is disclosed. The suspension orthotic support system comprises at least one variable resistance beam extending from a heel section to a mid-arch section of the footwear, wherein rotation of the variable resistance beam from a first position to a second position causes a resistance provided by the variable resistance beam to vary between a minimum resistance to a maximum resistance.

An active suspension orthotic support system is disclosed. The suspension orthotic support system comprises at least one variable resistance beam extending from a heel section to a mid-arch section of the footwear, wherein rotation of the variable resistance beam from a first position to a second position causes a resistance provided by the variable resistance beam to vary between a minimum resistance to a maximum resistance.