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Stay warm and comfortable with our collection of long underwear, designed for ultimate insulation and moisture-wicking performance. Perfect for layering during cold weather activities, these essentials provide a snug fit that moves with you. Crafted from soft, breathable materials, our long underwear ensures you stay cozy without sacrificing mobility. Whether you're skiing, hiking, or simply lounging at home, our versatile options will keep you protected from the chill. Embrace the cold with confidence and enjoy the perfect blend of comfort and functionality.
$55.00
I love that they are high wasted and a large waistband. ... UA leggings are of great quality, fit, and comfortable. ... Wonderfully made and kept me warm. ... Wear them under my work pants and they help me stay
5
Jeff48
Wonderfully made and kept me warm. Well fitting and comfortable.
5
Mars Go
This is so warm! It is surprising
5
Brydollaz
Fits great. Soft fitted material protects from the cold. Wear them under my work pants and they help me stay warm
5
JofD
UA leggings are of great quality, fit, and comfortable.
5
happycusstomer
I had an old pair of cold gear leggings from under armour gifted to me by a friend around 2010. I 've been looking for a new pair to add to my rotation and these did not disappoint. Super comfy. I typically wear a size 4- 6 in pants and went with a medium. Not too compressive but fit great at the waist( 27 '').
$40.00
Great for biking in the rain ... This is definitely the most comfortable and versatile piece of workout apparel that he own. ... I wear my pants over them and my pants still fit
5
emykaboom
Great on its own or under a pair of jeans for extra warmth. Comfortable and light weight for an active boy
5
K8Eo
Are they strictly for cooler temps, as it will warm up here in a month
5
Football Grammie
I buy my grandson his football clothing from here every year. Never disappointed!!!
5
Hockey mom 2021
[ Ordered this one for my son who is playing hockey. This is definitely the most comfortable and This is definitely the most comfortable and versatile piece of workout apparel that he own. My son likes it so much.
5
SwimmrMama
[ My son lives in these leggings with shorts layered over year round. They are warm enough to work on cold days in New England and the fabric is high quality. Wish they were a little longer but otherwise can ’ t be beat!
$65.00
I ’ m always cold so these are a blessing for me because they keep me warm and they are not bulky. ... Fits my grandson he can wear them for indoor practice during winter then outside in
5
Zay63
These are great! They keep me warm in the coldest weather. I ’ m always cold so these are a blessing for me because they keep me warm and they are not bulky. They wash up great.
5
Monkmpd
By far the best and warmest product you can buy. The sizing accurate. Spend the money and buy this instead of the cheaper, knock offs that do not perform as well.
5
Britt829
These are amazing! We love them. ❤️ My dad got my husband and I both a set for Christmas like 10 years ago or more. They are still in perfect condition. We use them for hunting, playing in the snow or anytime we have to be outside for long periods of time in the cold. When I go hunting and it's super cold or wind chill of- 15. I wear mine, my husband's and my under armour sweat pants under my hunting bibs. No need for a heater at all. My son told me he needed some bigger under layers so I automatically ordered him this set. He is going to be so excited when he gets the Christmas morning. If you have multiple children you definitely need to get these. They are such a good quality and will last for years if they are taken care of. The adults sizes are pretty unisex in the bottoms. The woman's top seems to be a little more fitted for the breast.
5
Under armour pants
Fits my grandson he can wear them for indoor practice during winter then outside in spring
$19.99
They are good quality, last longer than most, they are more comfortable and they do look good ... Long in the waist before the first washing, the fit is excellent now after a couple of trips through the
5
Tim From Pittsburgh
Quality is hard to find, Champion truly makes a quality product. I asked the Average consumer to try and rival this product, be a champion.
5
Ulyn
Bought 2, Husband very happy. Great price and very good fabric.
5
nonedear
I bought these for my husband. He 'd been wearing flannel pajamas under his pants, but these were so comfortable and so warm that he asked me to get more.
5
Sportspack
The Duofold® Originals Men's Thermal Pants are great! I will be ordering more soon!
5
Peregrin
Though I live in a warm climate and do n't need thermals much, they are great when they are needed. Had a pair for years that fit well, was comfortable to wear, could work outside in them. They wore out so I got another pair. They fit well and I expect good things from then.
$65.00-$130.00
WAS: $130.00*
It's their best thing in a very long time and I 've been a fan for years. ... The material is very soft, has a great but comfortable fit. ... They ’ re tight but flexible and
5
Hmae
[ Love the style. These are very warm and keep me toasty on those cold days. Would recommend to anyone looking for a quality under layers... very cute!
5
shellydk
[ I could go on and on about this whole line from Smartwool. It's their best thing in a very long time and I 've been a fan for years. The material is very soft, has a great but comfortable fit. These bottoms also have a nice wide and sturdy waste band so there is no bunching or other uncomfortable nonsense in that area. These are very warm, so perfect under a shell pant or bib for alpine skiing, but I do n't think I would wear them on a tour.
5
abeck
[ I received these as a Christmas gift. I love them under my bibs for snowboarding! They ’ re tight but flexible and comfortable. They keep me warm on the mountain.
4
Brenda
Fit is great. Very warm for Chicago winter runs, but a little bit itchy. Also I would like it to be thinner like the ones in the smartwool Tercel material. Sadly could not find those in mid rise online.
$39.99-$41.99
These leggings worked great as `` long underwear '' when I need to be out in the cold. ... I bought these to wear under my jeans to an Eagles game and I was soooo
5
Figarohall
I bought these to wear under my jeans to an Eagles game and I was soooo warm.
5
Lynnann816
These leggings worked great as `` long underwear '' when I need to be out in the cold.
$140.00
I typically get a size small for base layers, but love the medium for leggings to wear with oversized sweatshirts and sweaters. ... Super comfy, warm, durable( they still look like new after many washings), and the patterns add a fun
5
Andi
[ These are my everyday leggings for the winter season. Super comfy, warm, durable( they still look like new after many washings), and the patterns add a fun styling. I typically get a size small for base layers, but love the medium for leggings to wear with oversized sweatshirts and sweaters.
$115.00
They also don ’ t look like you ’ re wearing long underwear, so you don ’ t have to wear a layer over them if you don ’ t want to.. aka go to the store for chicken feed and don ’ t want to freeze:) This particular style is more
5
cathy
[ I bought these and the matching top for a hiking trip and LOVE them. They are so soft and comfortable and kept me warm without making me sweat. Perfect!
5
Karen
[ Amazingly soft and NOT itchy at all! High quality and fits very comfortably. Can ’ t wait to try it out soon with cold Michigan winter up north!!
5
Lynn
[ Love the quality and softness of these wool undergarments! I got medium top and bottom and they are true to size. I hike alot in the winter in the Smoky Mountains. These garments kept me cozy and warm! Love the mint green color also!!!
5
inaudwetrusr
[ These are great and probably my favorite pair of base layer bottoms. They are cozy, not too tight and breathe nicely. I ’ d like to buy another pair but my size is out of stock.
5
Ralph
[ I am an avid walker and must have my daily jaunt or I will go bonkers. I have hiked in all weather from the cold sub temps of Minnesota to the rainy and windy winters of Texas. Having warm thermals are essential. Searching online reviews, Smartwool keeps popping up. My wife and I bought two sets each of tops and bottoms and she just simply loved them instantly When ever the temp dips she gleefully pulls on her Smartwool NTS and a shell and she is out the doors. The material is just the right thickness and the seams are well hidden. It instant warms the body and as claimed, do not smell after a few uses As for durability we have to wait and see. We have other woolen garments and we can see these products appear to be durable. No regrets buying them but regrettably the color choices are limited due to stocks available.
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