Sitka Core Lightweight Hoodie - Sitka found that the majority of base layers offered zero technical features, requiring hunters to carry additional pieces of gear into the field to meet the demands of the pursuit. Their solution was to create a high-performance next-to-skin layer that includes technical features to improve concealment and utility. By optimizing breathability and moisture management and adding features not found in traditional base layers, the Core Lightweight Hoodie can be used as a standalone piece in hot weather or as the foundational baselayer into any SITKA system. Body and Hood Fabric: quick-dry, lightweight comfort stretch knit (100% polyester) Facemask Fabric: quick-dry, lightweight stretch mesh (88% polyester/12% elastane) Polygiene Odor Control Technology safely neutralizes odor caused from sweat Stretch Thumb Loops: shed layers with ease without compromising your foundational layer Built-In Ultra Breathable Mesh Face Mask: conceal your face on the move and increase your success rate GORE OPTIFADE Concealment Subalpine is designed for stalking and ambushing ungulates in tree-covered and vegetated terrain Weight - 187g Style: 10066-OB