Feature Polyester material makes it dry quickly,Lightweight, breathable, moisture-wicking fabric offers dry and cool feeling,Small Tip on the SIZE: they are Asian size, may be a little small for you. The size code XL of this jacket is equivalent to the US size code S,And so on.please mind the size chart both in the picture and the description.,Little Zipper in the neck offers you convenience to adjust,Long sleeve and little stand collar keep you from getting too much sun,Good for running, hiking, climbing, mountaineering, fishing, beach or casual wear