Patent ID: 9108086
Filing Date: 2015-08-18
Classification: A63B

Abstract:
1. An exercise system, comprising: an inflatable assembly that creates a curved support surface when inflated; a plurality of annular support elements structured and arranged to receive said inflatable assembly, each of said annular support elements having an inside edge that encircles an open central area, wherein each of said annular support elements defines a ledge that is sized to receive said inflatable assembly thereon, wherein each of said annular support elements has a peripheral edge with protrusions and reliefs spaced there along, and wherein said protrusions and reliefs from adjacent annular support elements intermesh when said annular support elements are concentrically stacked, and wherein each of said annular support elements has a body that extends from said inside edge to said peripheral edge, wherein said body defines at least one watertight internal compartment and a closable port for filling the at least one watertight internal compartment with a fill material.