First I' ll tell you I work at W.L.GORE in Maryland. I know how the stuff is made from the very beginning stages. Supprescent is a membrane just like gore tex that has carbon in it which means it will not wash out. I don' t know how much faith I have in carbon jackets but if you want something that will last buy supprescent. Yes I do have a supprescent jacket but still can' t say if has helped me or not in the field.