The Martha women's pants are a high caliber pair that is up to the challenges of the extreme weather that hits the mountains you play in. Their 20K waterproofing is capable of repelling the onslaughts of the worst storms you encounter. They are lightly insulated so that when paired with a baselayer they keep away the chill of a bitingly cold day. Best of all perhaps is there 4 way stretch fabric and insulation that leaves you free to tear it up without that being the case of your pants.