The Sitka Heavyweight Bottom is an essential next-to-skin baselayer designed to provide warmth for your lower body during extended periods of inactivity in frigid conditions. It excels at wicking moisture away from your skin when you're on the move. Featuring a comfortable stretch fleece material for warmth and channeled construction that enhances breathability and moisture management, the Heavyweight Bottom is the ideal choice for those chilly days when you're in a layout blind, standing in a tree stand, or glassing in the backcountry.