Abstract: An air conditioner for a vehicular seat, comprising a seat formed of a support frame and an air-pervious cushioning member resting on said support frame and provided within said cushioning member with an electric heater and in the lower part of said cushioning member with air supply means serving to pass air to said air-pervious cushioning member, an air conditioner, an air duct interconnecting said air conditioner and said air supply means, means for feeding electric power to said electric heater until the temperature of said cushioning member of said seat reaches a first preset level, and valve means capable of closing said air duct when the temperature of said cushioning member reaches a second preset level higher than said first preset level and opening said air duct when the temperature of said cushioning member falls below said second preset level.

Abstract: A cushioning material, comprising a lower filament cushioning layer of relatively high rigidity and high perviousness to air obtained by compression molding in a stated shape three-dimensional curled short fibers of polyester filaments of a relatively large denier number thereby producing a shaped mass of filaments and applying adhesive agent to the shaped mass thereby binding the points of mutual contact of filaments therein and an upper filament cushioning layer of relatively low rigidity obtained by compression molding in a stated shape three-dimensionally curled short fibers of polyester filaments of a smaller denier number than said polyester filaments thereby producing a shaped mass of filaments and applying adhesive agent to the shaped mass thereby binding the points of mutual contact of filaments therein, with said upper layer superposed on said lower layer.