IWOM Outwear: The King of Cold Weather Hunting. The IWOM OuterWear Iwom XT was designed for hunters in the most extreme conditions. Waterproof/windproof hunting from +40 degrees to sub zero temperatures is not a problem with the Iwom OuterWear IWOM XT. Perfect for late season whitetail or trips to Canada. Confused about the sizing? Call us! We can't Wait to Take your Order!