Flame Smart Heated Base Layer
In cities with bitter winters, it seems like it's always one extreme or the other: not enough clothing and you're colder than a well digger's asshole; or too many layers and you're walking around in -2 degrees sweating like a whore in church. Canadian company FuelWear, whose founders have spent many a Toronto winter fluctuating between these 2 states of discomfort, seeks to bring programmable equilibrium to body temperature with their Flame Base Layer.
The Flame is a long-sleeved shirt with built-in heating elements. Smart heating elements that warm to raise body temperature when the cold kicks up, and then automatically back off when your desired level of warmth is reached. Set the temperature on the Base Layer's embedded controller, and an adjacent sensor will track the heating elements, increasing or decreasing their output to maintain that number.
FuelWear promises to keep wearers up to 10 degrees C (50 F) warmer for 3 hours in weather that hits well below freezing (or 5 degrees C for 6 hours, 2-1/2 degrees C for 12 hours). Its 3 heating elements are integrated as 2 strips in the front and 1 in the back of the Base Layer to keep torsos warm and promote blood circulation. The shirt's fabric is bamboo, a material FuelWear says is both comfortable and durable, plus moisture-wicking and odor resistant.
The Flame Base Layer runs as an IndieGoGo crowdfunding campaign through October 10, 2014.