UA CoolSwitch, an exclusive coating on the inside of the Under Armour Mens CoolSwitch Thermocline Hybrid Crew, pulls heat away from your skin when active. Youll feel cooler and be able to stay active longer. Mesh underarm panels catch cool breezes for strategic ventilation. UA Thermocline material wicks sweat and dries super-fast. Four-way-stretch construction moves easy in every direction. Odor-fighting technology keeps the crew smelling fresh longer. Polyester/elastane construction. Imported. Sizes:M-2XL. Colors:Elemental, Green Hydro Camo. Type: Long-Sleeve Shirts.