FIT & DESIGN: Fitted base layer Crew neckline with 1/4 zip Warms your core and manages ventilation and perspiration Base layer constructed of 3 dynamically complimenting fabrics that deliver upper body warmth especially on the lower back and kidneys Reflective accents provide increased visibility Comfortable raglan sleeves Anti-chafe construction prevents rubbing in areas of high friction TECHNOLOGY Ergonomically placed Max Wick™ for increased breathability in areas where we run hot Polygiene® anti-microbial mesh in highest vent areas Exclusive Heatwave™ material means you get the warmth you need in just one base layer