I'm not usually one for man made fabrics but after a long 5 day hike last summer wearing a British army issue coolmax t-shirt in brown colour I can say I was completely dry no matter how tough the walk got, and did not experience that hot sweaty feel you get when wearing normal man made garments. Very impressive stuff, and looking for coolmax in long sleeved shirts is proving very difficult. I think football shirts are made from this stuff??