US Patent 7107638 Thermally-adaptive comforter with aesthetic design variability

A thermally-adaptive comforter which gives the user a greater amount of control over the temperature of their sleeping environment. The invention accomplishes this objective by providing a comforter with hatches which allows the user to vary the thermal conductivity of the comforter in certain areas. The comforter includes a plurality of hatch covers, having different colors or designs, which are placed over hatch openings. The hatch covers are detachably fastened to the comforter so that the hatch covers may be rearranged to change the appearance of the comforter. This feature of aesthetic design variability allows the user to change the appearance of the comforter as desired.