Since I work construction outside all year and we might be the only idiots that will be out there when it's 15 below. I bought this under layer called chili pepper, it's made for skiing and outdoor stuff like that. Then i wear jeans over that and then my camo suit pants. For the top I wear a fleece and my hunting suit jacket over the chili pepper top. For socks their called wigwam which I like the best or get a sock that is a marino wool. When it's that cold out I wear my Lacrosse ice king boots which are winter boots. when it's above 0 I'll wear my hunting boots. I will start sweating at work at 15 below but Just sitting for hunting I can stay warm enough to be out there all day.