Abstract: Sports board (15) comprising an elongated expanded closed-cell polyolefin foam layer (16) having a foam thickness and opposed surfaces (18, 19), a first polyolefin sheet layer (23) having a thickness less than the foam thickness and having an inner surface (25) and an outer surface (24), an intermediate metallocene-based polyolefin layer (20) having an inner surface (22) and an outer surface (21) and a thickness less than the foam thickness, the intermediate layer bonded on its inner surface to the foam layer and bonded on its outer surface to the inner surface of the first layer. The intermediate layer may comprise an ethylene-alpha olefin copolymer and may comprise a copolymer of ethylene and octene.

Abstract: A variable flexible bodyboard comprises a lightweight, generally elongated, foam core material having a top skin layer and a bottom skin layer with a front nose end and a rear tail end. The bodyboard has also an elongated stringer element having a one end and an other end, and composed of at least one stiffener material, of a defined length, to impart stiffness to the bodyboard, and at least one flexible material, of a defined length, to impart flexibility to the bodyboard. The stringer element is positioned and secured within the foam core material of the bodyboard; and a helical spring is disposed within the stringer element imparting additional resiliency to the stringer element.

Abstract: Sports board (15) comprising an elongated expanded closed-cell polyolefin foam core (16) having a core thickness and opposed surfaces (18, 19), a first polyolefin sheet layer (23) having a thickness less than the core thickness and having an inner surface (25) and an outer surface (24), an intermediate metallocene-based polyolefin layer (20) having an inner surface (22) and an outer surface (21) and a thickness less than the core thickness, the intermediate layer bonded on its inner surface to the core and bonded on its outer surface to the inner surface of the first layer. The intermediate layer may comprise an ethylene-alpha olefin copolymer and may comprise a copolymer of ethylene and octene.