Abstract: A temperature-regulating device for a personal fluid includes a housing having an exterior wall defining an inner space and having an opening therethrough. A dividing wall within the inner space defines a reservoir sector and a heating system sector on opposite sides. A cap portion is affixable adjacent the opening, has a closable aperture therethrough, and is movable between a storing position in covering relation to the opening and a dispensing and filling position wherein the opening is exposed, for enabling a fluid to be placed within and removed from the reservoir sector. A heating system within the heating system sector includes a heating element adjacent the dividing wall, for enabling heat transfer to the wall and then to the reservoir sector. An activator affixed adjacent the exterior wall is in signal communication with the heating system. An illumination element is provided for facilitating visualization in low-light conditions.