Long Underwear

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.

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7 products
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Under Armour Women's ColdGear Authentics Leggings
  • Black
  • Charcoal Light Heather
  • Midnight Navy

Under Armour Women's ColdGear Authentics Leggings

$55.00

(311)

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

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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 '').

Under Armour Boys' ColdGear Armour Leggings
  • Black/White

Under Armour Boys' ColdGear Armour Leggings

$40.00

(107)

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

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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!

Under Armour Youth Packaged Base 4.0 Leggings
  • Black

Under Armour Youth Packaged Base 4.0 Leggings

$65.00

(4)

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

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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

Smartwool Women's Merino 250 Baselayer Leggings

Smartwool Women's Merino 250 Baselayer Leggings

$125.00

(67)

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

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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.

ColdPruf Women's Quest Performance Base Layer Leggings
  • Black

ColdPruf Women's Quest Performance Base Layer Leggings

$39.99-$41.99

(4)

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

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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.

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Long Underwear

On this page...

  • What is long underwear and what purpose does it serve?
  • What materials are commonly used in long underwear?
  • How should I choose the right fit for long underwear?
  • Are there different styles of long underwear for various activities?
  • Can long underwear be worn in warmer weather?
  • How do I care for my long underwear to ensure longevity?

Frequently Asked Questions For Long Underwear

Long underwear is a type of base layer clothing designed to be worn underneath regular clothing for added warmth and insulation. It is typically made from materials that wick moisture away from the skin, helping to keep you dry and comfortable in cold weather. Long underwear is ideal for outdoor activities, layering during winter sports, or simply staying warm during colder months.

Long underwear is often made from a variety of materials, including synthetic blends, wool, and cotton. Synthetic fabrics are popular for their moisture-wicking properties and quick-drying capabilities, while wool offers excellent insulation and breathability. The choice of material can affect the warmth, comfort, and performance of the long underwear.

When selecting long underwear, it's important to consider both comfort and functionality. A snug fit is generally preferred to ensure effective moisture-wicking and insulation, but it should not be restrictive. Look for options that offer a good balance between warmth and breathability, and consider your layering needs based on the activities you plan to engage in.

Yes, long underwear comes in various styles tailored for different activities and weather conditions. Some options are designed for high-intensity activities, featuring lightweight and breathable materials, while others are made for colder climates with heavier insulation. It's essential to choose a style that matches your intended use, whether for casual wear, skiing, or other outdoor sports.

While long underwear is primarily designed for cold weather, there are lightweight options made from breathable materials that can be worn in cooler summer evenings or during transitional seasons. These styles help regulate body temperature and wick away sweat, making them suitable for a range of temperatures. However, for hot weather, traditional shorts or lighter fabrics are typically recommended.

To prolong the life of your long underwear, it's best to follow the care instructions provided by the manufacturer. Generally, washing in cold water and avoiding fabric softeners can help maintain the material's performance. Air drying is often recommended to prevent shrinkage and damage from high heat, ensuring your long underwear remains effective for many seasons.