The closest to waterproof and breathable that you can get.
Reviewed by Gelts from Wisconsin on Friday, August 9, 2013
I used this jacked during a canoe trip in August when we experienced a downpour for several hours. Kept me bone dry and I didn't overheat. I also have a Patagonia Rain Shadow and don't think that I will use it again because even with pit zips, it left me overheated. I was torn between this and Polartec Neoshell. I think I made the right choice for the price I paid. Great lightweight feel. I will use it for cross country skiing and hiking as well. Couldn't be happier.