Warranty extension becomes available upon proper registration of the product by the owner via Highfield Boats warranty website: http://warranty.highfieldboats.com. Product must be registered within sixty (60) days from the date the product is purchased. Warranty extension covers the ability of the tube fabric to hold air to ISO 6185 (airtightness test). Duration of the coverage: Tube made of ORCA (Hypalon) fabric: ten (10) years from vessel date of purchase. Tube made of Valmex (PVC) fabric: five (5) years from vessel date of purchase. The standard two (2) year seam coverage will also be extended to a total of  ten (10) years ORCA (Hypalon) and five (5) years Valmex (PVC) after warranty extension. Warranty extension does not apply if the vessel is used for rental or commercial use.