I wear these Airborne Vintage pants from company called Surplus Raw Vintage almost all year (except summer) - http://www.surplus-shop.de/start.php?wrk...job=&lang=2 . In winter I wear them with one thermo layer under. They are 100% cotton pants though so probably not what you are looking for. I wouldn't wear them in some really harsh weather but for shorter trips and trail running, they are great and extremely comfortable. They are also good if I am near a fire, they don't rustle and last but not least they look good.