SITKA Gear heavy weight bottom: the heavy bottom is a basic base layer that keeps the lower limbs warm WARM AND BREATHABLE - This bottom provides a comfortable stretch fleece for warmth and a channeled construction for added breathability PERFECT FOR COLD DAYS - Bottom is perfect for cold days in a layout blind, stand, or glasses in the backcountry Polygiene Technology - Polygiene technology neutralises unpleasant odors caused by sweat and increased activity in hunting HIGH PERFORMANCE FABRIC The heavy weight Sitka Gear johns are made of heavyweight stretch fleece with polyester (93%), spandex (7%)