These are probably one of my favorite articles of clothing. I am a frequent (normally 5+ times a week) endurance runner, and I have found these to be a great addition to my gym bag. Whenever it's too chilly to wear shorts, I'll pull on my Underarmour coldgear leggings and throw my shorts on top of them. Thay keep my legs nice and warm without overheating them.

I also tend to use these as a base layer under everything from jeans to my dress pants whenever it's cold out. Again, they keep my legs warm , but not too warm.

I also like the fit of these leggings. They are tight around the legs, providing good muscle support and compression (good for reducing injuries and soreness), without being too uncomfortable in the crotch and rear (provided you don't wear anything under them -- yes, they are supposed to be worn as underwear). They also have what feels like a synthetic microsuede interior, which just ads to the overall comfort level.

I have heard a few people complain that underarmour heat gear keeps them a bit too cold, especially when they don't wear anything on top. I like to be slightly cooler when running, so these work for me. If you can't stand being a bit on the cool side, you probably shouldn't leave any part of the tights uncovered (wear something over that completely covers them), but if you don't, yo won't be shivering either. 5 stars

Best 50 bucks I've ever spent. I have a valet job and work outside all winter, I wear these things every day under a pair of thin Dockers and they are fantastic. I'm a bigger guy, and the compression gear tops don't work well with my big gut, these are just right for my lower body type. If you're a size 38-40 waist like me, go with the XXL, it's just the right size. Combined with the Under Armour Driver Mock (actually a golf item) my base layer is perfect, I never get cold. I recently wore the same combination skiing, and the leggings were perfect under my snow pants. Just pull them up to the top of the sock with a little overlap and no moisture accumulates against your body whatsoever, a very important element of staying warm and safe when it's cold out. All of Under Armour's products I have tried do a great job of this moisture transportation away from your skin and I'll never wear cotton or other long underwear again. Do yourself a favor and try these out, they are the new gold standard in my book. 5 stars

I bought a pair of these and thought they would work out fine. Luckily I happened to be looking for some other running clothes and found something else for literally half the price made out of the exact same material. So I quickly returned them. Under Armour is to training clothes what the ipod is to the mp3 world. You are paying for a name, nothing more. You can walk into any sports store and get something that's the same material and quality for half the price (or at least 15-20 $ cheaper.) There is no need to waste money on these, unless you are one of those people who are exercising to look cool and hip with your over-priced clothing, then continue to buy these. 2 stars

I purchased the under armour leggings for my husband. He works outdoors. He found the leggings to be very beneficial. He has been wearing them on a regular basis and is very satisfied with the warmth and comfort they provide. 5 stars

I hate the cold. I mean I really HATE it, after getting frost bite on my nose and ears. However, I try not to let it slow me down. I run except in the coldest weather (like now its almost 0F with the wind chill).

Whenever the temperature drops to 40F or less, I wear these and my running shorts. I can wear them to about 60F, then I overheat and have to shed them. They are great except the fit; they were too small in the quads, so I chose a XXL. When the weather gets very cold (25F to 10F), I layer additional clothing on top, wind pants, jeans, whatever.

See my Smartwool reviews about other cold weather gear that I wear. 5 stars