My silk long johns were long overdue for replacement. This is it. Not so thin it's cheap, but you just know you're going to be warm and not be bulked up in your mother's long johns. In other words, you'll be warm in your tight jeans and who'll know there are long johns underneath? These are (almost) sexy! And roomy. I'm tall and chesty so it's difficult to find things like this that fit. These do and I know I'm gonna love them. Going to an 8-day photo class in Santa Fe where the weather in one day can go from freezing to hot hot hot. But I'll start out with these, duck behind a bush and get them off (if I can find a bush) and if we stay for sunset, get them back out for the cold evenings in Santa Fe.