Let me first say that I only wear 2 brands on the golf course...J.L. and Peter Millar. I wouldn't typically buy a navy shirt in the height of summer. But this shirt called to me and I answered. It made it's debut at Pumpkin Ridge, OR. It was an 84° Day, with 80% humidity. This shirt performed perfectly in those conditions. No shoulder hang-up, no sticking to my arms and a lightweight, dry feel all day long! By the way, I bought another one made of the same material, with a variation on design. And of course, I bought it from Golf Anything!