Men's Under Armour polo shirt thanks to Iso-Chill fabric combined with 4-Way Stretch technology for an incredibly comfortable feeling during wear. Iso-Chill fabric helps dissipate body heat, so it's cool to the touch. 4-Way Stretch technology allows for better movement in every direction. The material wicks away sweat and dries very quickly. UPF 50+ protects the skin from the sun's harmful rays. Modern collar with low profile. Side hem with ventilation.