BionicBrianawrote a review of Under Armour Base 4.0 Legging - Women's on December 24, 2016
Familiarity: I've used it several times
Fit: Runs small
I've been skiing in these three times so far this winter and not once have my legs been cold, even while sitting on the lift! The only thing is that when you take them off you'll have a goofy waffle pattern on your legs but hey, it's a small price to pay for warmth!
The only downside is if you have a round booty like I do, they ride a little low in the back. But the warmth makes up for it!