1638591 Columbia Men's Midweight Stretch Long Sleeve Top This basic is anything but basic. Enjoy this classic and versatile shirt with Omni-WICK to wick away sweat and and Omni-HEAT to trap and circulate your body heat. A classic style with only the best technology from Columbia. Omni-HEAT thermal reflective Omni-WICK wicks away sweat 4-way comfort stretch Captures and neutralizes odor for long lasting freshness Ergonomic seaming Flatlocked construction Fabric 85% Polyester 15% Elastane