Whether you're working outside or working out, this tee keeps you cool on hot, humid days. All-over perforation provides maximum breathability, while the moisture-wicking, odor-resistant fabric guarantees you stay fresh and dry.360 Airflow T-Shirt Product Features : AriatTEK® is designed for optimal comfort in any weather, with built-in performance features that adapt to changing conditionsClimateTEK™ dynamically responds to your body temperature to keep you cool when things heat upFreshTEK™ odor control helps keep you feeling fresh through long hours of wearGreater Arm Mobility™ helps extend arm and shoulder range-of-motion so you can move freely, Contrast flatlock top stitching for comfort Men's 360 Airflow T-Shirt in Black, Size: Medium by Ariat