With a gusseted no-bunch crotch and low-profile elastic waistband, the CORE Lightweight Bottom provides just enough warmth for when temps dip and dial up animal activity. Featuring permanent Polygiene® Odor Control technology to neutralize odor by stopping the growth of odor-causing bacteria and fungi. The CORE Lightweight Series is the next-to-skin layering foundation for SITKA Systems, actively moving moisture away from the skin while keeping the hunter dry and comfortable. GORE™ OPTIFADE™ Concealment Subalpine is designed for stalking and ambushing ungulates from ground level in tree-covered and vegetated terrain. Fabric: Quick-Dry, Lightweight Comfort Stretch Knit (100% Polyester). Low-Profile Elastic Waistband: In addition to a gusseted no-bunch crotch for optimal comfort. Quick-Dry, Comfort Stretch Lightweight Knit: Stay warm when the temperatures dip. Polygiene® Odor Control Technology safely neutralizes odor caused from sweat.