The 2019 Sitka Gear CORE Lightweight Crew LS (Long Sleeve) packs a 1-2 punch with great moisture wicking and Permanent Polygiene Odor Control Technology. The redesigned 2019 Sitka Gear CORE Lightweight Crew LS with its quick-dry comfort stretch fabric to wick away moisture during those chilly early morning hikes, keeps you cool and concealed on those hot late afternoons on the stream. The long sleeves, stretch thumb loops, low-profile crew neck, and Optifade technology keeps you concealed when stalking your prey; four legged, winged or finned. ­ To fill out your 2019 Sitka Gear Core Lightweight ­ series be sure to check out the 2019 Sitka Gear Core Lightweight Bottom, 2019 Sitka Gear Core Lightweight Crew SS, and 2019 Sitka Gear Core Lightweight Hoody. FEATURES Quick-Dry, comfort stretch lightweight knit Low-Profile Flatlock seam construction Drop-tail design Stretch thumb loops Offset seams on shoulders Permanent Polygiene Odor Control Technology SPECIFICATIONS Breathability Odor Control Warmth Moisture Wicking Fabric Details: Quick-Dry, Lightweight Comfort Stretch Knit (100% Polyester) Weight: 5.1 oz MPN: 10064 Size Chart: ­Click Here Performance Fit, designed for minimal layering. OPTIFADE SUBALPINE Designed for stalking and ambushing ungulates from ground level in tree-covered and vegetated terrain. Subalpine is optimized for engagement ranges of 50 yards and less. Environment: Vegetated TerrainScenario: Ground Ambush, Spot & StalkClimate: Hot, Warm, Mild OPTIFADE OPEN COUNTRY Scientifically optimized for engagement ranges of 40 yards and beyond at ground level in rocky terrain above the timberline. The Open Country pattern uses the larger neutral areas of the pattern (macro pattern) that are more critical to concealment at greater engagement ranges. Environment: Open TerrainScenario: Spot & StalkClimate: Hot, Warm, Mild OPTIFADE ELEVATED II Specialized systems optimized for the pursuit of whitetail in forested environments with stealth, comfort and weather protection. Environment: Vegetated TerrainScenario: Elevated, BlindClimate: Hot, Warm, Mild OPTIFADE MARSH Specialized systems and concealment built to handle the heat, cold, rain, snow, wind, cattails, cornstalks, muck and finicky flocks found in water and dry field marsh environments. Environment: Marsh / FieldScenario: Dry Field, WetlandsClimate: Hot, Warm, Mild TECHNOLOGY POLYGIENE Polygiene Odor Control Technology is a natural fit for hunting. By permanently treating fabrics with low concentrations of silver salt, which has inherent antimicrobial properties and is naturally present in water, Polygiene safely eliminates the ability for bacteria to grow and effectively neutralizes odor. GORE OPTIFADE CONCEALMENT Traditional mimicry patterns based on human vision are designed to look like a specific type of vegetation or terrain. GORE OPTIFADE Concealment is the only scientifically proven concealment pattern based on animal vision to optically fade a hunter into their surroundings. By using advanced blends of micro and macro patterns to fool animal vision rather than mimic a particular shape, GORE OPTIFADE Concealment is more versatile and more effective at getting hunters close to game. SITKA DESIGN NOTES Hunters are in need of a foundational next-to-skin piece that can span temperature variations throughout the seasons in order to regulate heat and sweat. Sitka's approach was to build a base layer that, when worn, feels like you were hunting with nothing on. Sitka Gear used durable polyester bi-component construction with Polygiene Odor Control Technology to deliver breathability, moisture management, and odor control. This crew can be worn as a standalone outerwear piece or layered into a system for all-season hunting.