Under Armour Men's CoolSwitch Thermocline 1 / 4 Zip

Loose: Fuller cut for complete comfort.
UA CoolSwitch uses an exclusive coating on the inside that pulls heat away from your skin, so you actually feel cooler
Mesh underarm panels deliver strategic ventilation
4-way stretch construction moves better in every direction
Material wicks sweat & dries really fast
Anti-odor technology prevents the growth of odor-causing microbes
6.5 oz. Polyester/Elastane