Heated sleeping bag ground pad

A back-pack transportable heated sleeping ground pad system comprising:

• (a) a sleeping ground pad;
• (b) a compact heating reservoir comprising:
• (i) a lower, thermally conductive, heat transfer surface adapted to receive heat from a variety of outdoor heating sources;
• (ii) an upper surface parallel to said heat transfer surface and including intergral side walls perpendicular to said upper and lower surfaces, said side walls and said lower surface including cooperative attachment means whereby said upper surface may be attached to said lower surface thereby defining a reservoir cavity for holding a heat transfer fluid therein, said upper surface adapted to receive an electric pump positioned within a pump cavity, said pump cavity and said electric pump communicating with said reservoir cavity;
• and
• (c) flexible, resilient, elongated tubing through which said heat transfer fluid may be circulated, said tubing having a fluid input end communicating with said pump cavity and a fluid output end communicating with said reservoir cavity, a substantial length of said tubing between said input and output ends strategically embedded within said ground pad for heating an optimal surface area thereof during operation of said system.