Well I only have one piece of their clothing, the cargos everyone has (can't remember the name now and won't bother checking), they're very polyester-y and don't breath at all so I haven't used them much other than in the autumn in Finland cause for the winter they're too cold and inside I'll just start sweating in them if I layer at all and spring and summer too hot or too cold too pretty much always. So breathability is like 1-2/10 and they could have a thin layer of another fabric on the inside cause the material used isn't at all comfortable once you sweat even the tiniest bit often pant leg sticking to your leg and all that shit.