Leave a desert camp at dawn in January and the first thing the car does is fog up from the inside — damp blankets, cold glass, five people breathing. A plug-in defogger sits on the dash and blows warm air straight at the windscreen while the engine's own heater is still waking up, so you're driving in two minutes instead of wiping the glass with a sleeve. It's a small heater, not a cabin heater: it clears the view and warms your hands, and that's the job.

— The Ghalyh team · How we pick