Keep training hard when the temperature drops with the Thermal Half Half Zip Top which has mesh zones and stretch panels for breathability and Climate Control. Long sleeves with strategically-placed ventilation zones to prevent overheating.Thermal elements help keep you warm while Climate Control technology regulates overall body temperature.Our soft feel, quick-drying, moisture-wicking garments actively and efficiently wick away the build-up of excess sweat and moisture.Thumb loops keep the top secure and the reflective heat transfer logo lets you be seen in low light conditions.