With lofted fleece insulation and a form-fitting hood for added warmth and concealment, the Sitka CORE Heavyweight Hoody keeps you from shivering on long, frigid stakeouts. Permanent Polygiene™ Odor Control Technology neutralizes odor by stopping the growth of odor-causing bacteria and fungi. The Sitka CORE Heavyweight Series is the next-to-skin foundation for static hunts in cold weather, with a body-mapped grid fleece backer that retains warmth while actively moving moisture away from the skin.