My lights on my studded tire bike go in my pocket until I need them.. (here it has not snowed , on the coast at sea level ,

( but it is icy on the passes over the Coast range [1600 feet on US 26] I don't live there but we have to go over that, or US 30 to PDX..)



Mountaineering head/helmet lights have long cords so you have the batteries warmed by your body heat

keeping them in a pocket, under your parka.





.....