| http://www.w3.org/ns/prov#value | - In accordance with one embodiment of the present invention, expandable, elastomeric tube 408 is suitably comprised of molded plastic pieces formed from conventional, thermoplastic polymers such as polyethylene or the like, and from conventional plastic molding techniques such as blow molding, injection molding, rotational molding, thermoforming, or the like.
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