I want the 5 star review of George, who I fully associate myself, to add the following: I've worn the jacket over 3 weeks in Africa on Kilimanjaro and Mt Kenya over all climate zones of the earth at different ambient temperatures with full 35 liter backpack / stressed and am totally thrilled. Despite the lateral stretch inserts the thermal behavior and the breathability in the motion is a good to very good wind protection available, outstanding. The hood was there often helpful. I could not detect any signs of wear on the jacket in spite of the high loads. Only the zipper a little hooked, so sometimes only at the third attempt to close the jacket was possible. A wholly owned recommendation from me.