Awesome material that moves, stretches, is breathable and quick dry for intense summer backpacking. Wore them 4 days in hot summer heat hiking over a 9,500 ft trail and they didn't stink! Only complaint is I'm a size 2 in Prana and a 4 in most other brands. Had to return and reorder because the 4 in these shorts were like spandex! Size 6 was perfect. I'm 5'2" 120 and athletic build.