With a gusseted no-bunch crotch and low-profile elastic waistband, the Sitka Big Game Subalpine CORE Lightweight Bottom provides just a touch of warmth for when the temperature dips and dials up the animal activity. Permanent Polygiene Odor Control Technology neutralizes odor by stopping the growth of odor causing bacteria and fungi. The CORE Lightweight Series is the next-to-skin foundation for your high-exertion system, breathing efficiently and actively moving moisture away from the skin with its polyester bi-component construction.