For a lightweight layer that will keep you cool and dry in hot conditions, the Patagonia CapileneR 1 Silkweight Graphic Crew is the answer. Worn alone, it offers you 50 UPF sun protection, great stretch and a cool, drying airflow. When worn with another layer, it helps wick moisture and adds some warmth when temperatures drop. CapileneR performance baselayer fabric dries quickly and breathes well. Hot days require a layer that will keep you going, so pick up the Patagonia CapileneR 1 Silkweight Graphic Crew.