Floatable, in particular inflatable, obstacle courses for sports and amusement purposes and floatable, in particular inflatable, water parks, preferably comprising floatable gymnastic apparatuses, floatable play apparatuses, floatable sports apparatuses, floatable islands, floatable trampolines, floatable bouncy castles, floatable water slides, floatable climbing apparatuses, floatable climbing frames, floatable climbing walls; elements as parts or accessories (as far as included in this class) for floatable, in particular inflatable, obstacle courses for sports and amusement purposes and for floatable, in particular inflatable, water parks, preferably floatable gymnastic apparatuses, floatable play apparatuses, floatable sports apparatuses, floatable islands, floatable trampolines, floatable bouncy castles, floatable water slides, floatable climbing apparatuses, floatable climbing frames, floatable climbing walls, as far as included in this class; inflatable entertainment and large play apparatuses of all kinds, in particular inflatable trampolines, inflatable bouncy castles, inflatable water slides, inflatable climbing apparatuses, inflatable climbing frames, inflatable climbing walls; inflatable equipment for water polo and volleyball; floatable pads [for recreational purposes]; swimming aids for recreational purposes; swimming belts; flippers; swimming boards; water wings; swimming rings; swimming jackets; bags especially designed for surfboards and for water sports equipment