Patent ID: 7422228

Claim:
A snow sled board comprising: an expanded polymer foam core; an extruded thermoplastic polymer outer layer having an inner surface and an outer surface; an expanded polymer foam intermediate layer between said core and said outer layer which is laminated to said inner surface of said outer layer; said outer surface of said outer layer being substantially planar and having at least one series of longitudinally extending, parallel and alternating grooves and ridges; said series having a width and said grooves and ridges spaced across said width so as to provide from about ten to about eighty grooves per inch of said width, wherein said grooves have a depth of from about 0.05 mm to about 1 mm, wherein said core is selected from a group consisting of polyurethane foam, polyethylene foam, polypropylene foam or polystyrene foam, wherein said outer layer is selected from a group consisting of polyethylene or polypropylene, wherein said intermediate layer is selected from a group consisting of polyethylene foam or polypropylene foam, wherein said core has a density less than the density of said intermediate layer.