This shirt is the all around for every sport, best layer I own. I have three of em. Even though its a super thin material, it adds quite a bit of warmth for long days on the mountain and in the heli. Season change, and its not quite warm enough for a T, so throw this thing on, early morning runs, this keeps the chill of, and the fast drying fabric keeps you dry as you sweat. then of course, you can use it for what its advertised for- long days on the water. plus, i love the look of the thin material, and find this hoodie/shirt pretty damn stylish. So, all in all, from the bar to the shooting range, from misty trail runs to heli skiing in AK, this thing kills it.