Galanter & Jones cteates heated outdoor chair to replace patio heaters.

 San Francisco Studio Galanter & jones has claimed to be first to create cast-stone heated outdoor furniture, which makes a sitter feel like being in a hot tub without getting wet.

Brother & Sister duo Aaron & Miranda Jones designed the range of seats to replace outdoor heat lamps, which they said don't do a good job keeping people warm.
The outdoor furniture warm the sitter by raising their core temperature, like underfloor heating of emitting heat into the air. Also it get you warm deirectly by warming your core and blood so that your enter body stays warm.