Abstract: An all-weather comfort-control suit operable to permit a rider of an open-air vehicle to heat or cool their body to a comfortable level. The suit may comprise a number of independent temperature zones that may be heated or cooled based upon different conditions specified by the rider and in response to temperatures measured by a number of temperature sensors. The suit may comprise a modular design permitting riders to selectively utilize individual pieces of attire that are desired. The suit may further provide protection to the rider from injury or the environment.