Curious
Didn't see any specs for current draw or BTU's (heating or cooling). The solid-state heat pumps I've seen draw quite a bit of current for modest heat transfer. Since this unit would need to offset natural body heat production (~100watts) plus environmental heat gain (variable, depending on wind/temp/sun) and the unit seems to rely on open system (rather than recirculating) flow I'd be surprised if the unit would do much more than have a modest (at best) effect. Might make a 90 degree day seem like an 85 degree day, in other words. But not quite enough for Death Valley. Probably be better off getting a cool vest (as used in auto racing). You'd need to stop every so often for ice, but it woudn't overload the electrical system.