The Smart Parka is made in two layers. The outer layer can be worn in normal winter temperatures in most parts of North America. The coat's inner lining can be attached in extreme weather.
North Aware uses a proprietary synthetic insulation in the outer shell and white duck down (10% feather) in the inner lining. Duck down, despite being very warm and light, absorbs moisture and loses many of its insulating properties when wet. Therefore we used synthetic insulation in the outer shell. In extreme conditions, attach the inner down-filled lining for more warmth.