Columbia Men’s Omni-Heat Midweight Baselayer Black Half Zip XM6320-009 Brand new with tag. 100% AUTHENTIC! VERSATILE BASELAYER This performance half-zip is the perfect first layer in winter, or a stand-alone in spring or fall. Unzip the collar for cooling. WARM AND DRY Our thermal-reflective lining holds heat in, while the wicking fabric keeps you from getting a chill. PERFORMANCE FIT The ergonomic, body-contouring seaming is made to move, and thumbholes keep the sleeves in place. Omni-Heat™ thermal-reflective lining retains warmth using breathable silver dots that reflect body heat, so you stay warm and comfortable as temps drop Omni-Wick™ keeps you dry and cool by pulling moisture to the fabric’s surface to evaporate, delivering fast-drying, next-to skin comfort in the heat 4-way comfort stretch Captures and neutralizes odor for long-lasting freshness Ergonomic seaming Flatlocked construction Thumb holes Center Back Length: 29"