Pay attention to sizeing charts, do not be affraid to trust them even though they seem a bit off. I am a 36 waist and had to browse some similat product sizing charts before I decided on the Large. It is just right as a windproof overpant. It also has a thermal lining for extra warmth. Sometimes I'll use it over my silk thermals so as not to overheat. But I'm we're going to dine at a lodge, I'll have jeans under and take off teh overpants when inside.