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The cold winter months can be unbearable; it's hard to be up and about when you feel frozen! Though layering up is a solution, too many layers can make you feel bulky. To add warmth without the bulk, try a thermal underwear set! It's thin enough to serve as a base layer and yet packs serious insulating power, saving you from having pile on sweaters and coats.
Finding the best thermal underwear set can take up quite a bit of your time, so we took care of it for you! Read our curated list of the top 10 best thermal underwear sets for women to find one that'll suit you. Topping our list is Thermajane's super-soft Ultra Soft Thermal Underwear Set. It's comfortable and also comes with UV protection. Be sure to check out the buying guide for all the information you need to pick out the perfect set.
mybest US' editing team consists of experienced members who have backgrounds in writing, editing, translation, and more. We are dedicated to researching what makes a product or service the best to users in the US in order to create top-quality articles. From skincare, to kitchen appliances, and to DIY supplies, our mission is to find the best ones for you.
Table of Contents
When it comes to picking a thermal underwear set, you want to make sure that comfort meets function. Look for one that will feel comfortable and keep you warm.
Consider how much time you have to put on your thermal wear. If you’re in a hurry, consider getting one with a front zipper or a stretchable set that you can quickly jump in.
One-piece thermal underwear sets have a top and bottom that are sewn together. If you opt for this kind of set, make sure it comes with features that make it easy to wear. Zippers are generally much easier to deal with, especially if you're in a hurry. It depends on where they are placed, though: front zippers are the easiest to use.
However, a zipper is in the back will be very difficult to close by yourself! Side zippers are a bit more challenging than front zippers, but they're way less of a hassle than back zippers. Buttons will take you much longer, but your skin isn’t likely to get caught in them!
Other sets include two separate pieces. A pullover thermal top might be easier to put on since zipping or buttoning up a piece of clothing made of tight material can be quite taxing.
The material of a thermal underwear set will determine its insulating capacity. Each material has its own pros and cons when it comes to insulation.
Wool is a natural material and a good insulator. It’s a great temperature regulator and has water-repellent properties, but it tends to trap air and moisture. It's less breathable than fleece.
By itself, wool can be too thick and itchy. Because of this, wool thermal underwear sets are either made with a special type of wool or a wool blend. For example, merino wool is soft to the touch, has a bit of fluff, and is a good insulator.
Because some types of wool can be too bulky due to their natural volume, a woolen set might not be the right choice for working out. Plus, you don’t want to break a sweat in woolen underwear! However, if you plan on lazing around at home on a chilly day, then this thick fabric can make you feel cozy.
Fleece is a man-made fabric. It's not as bulky and heavy as wool, but it retains heat well. Because fleece allows air and moisture to pass through, it’s quite breathable. Many thermal underwear sets have an inner fleece lining that feels extra soft against your skin.
Though they’re not the best to wear under workout clothes, fleece sets may be suitable for moderate activities like jogging or walking in cool weather since they provide insulation. If you’re going to be sweating, make sure your fleece-lined set has moisture-wicking properties to prevent sweat from getting trapped inside your clothes.
These sets make great base layers for lounging indoors, though, since the smooth fabric won't irritate your skin and will feel comfy to wear.
Some thermal underwear sets use a mixture of fabrics to give them their unique features. A polyester and spandex set is soft yet stretchable, allowing for unrestrained mobility and flexibility. These sets merge comfort with function, acting as an extra layer of skin that helps keep you warm while still allowing you to move freely.
Some also have layers that use different materials, such as a set with a fleece inner layer and polyester outer layer. These synthetic fabrics tend to be much more lightweight. Mixed-fabric sets are perfect base layers since they’re thin and breathable. They're also ideal for working out since they won't add bulk or weight.
However, these may not be the best options to wear as standalone sets at home since they’re not as insulating as other materials. Unless you have easy access to a heater or a blanket, you may want to wear another layer of clothes on top if it's chilly outside.
Since your aim is to keep warm, consider the amount of body coverage a thermal underwear set gives you. While some cover you from the neck down to your ankles, others give you a bit more coverage.
Thermal underwear sets with full neck-coverage will keep your upper torso nice and snug. If you deal with freezing weather, you need all the coverage you can get. Though full-neck coverage doesn’t sound appealing in hot weather, it’s a must-have during the winter.
Sets with a V-neck, on the other hand, will leave part of your chest uncovered. If it’s chilly but warm enough to put on a V-neck, this won’t be a problem. It also won’t mess up whatever style you might be going for. Other sets have scoop-necks that are more discreet and easier to layer over.
If your aim is to keep as warm as possible, then opt for a set with full-neck and full-leg coverage. However, thermal underwear with full-leg coverage will show if you plan on wearing a pair of shorts over it.
Products | Image | Click to purchase | Price | Key features | |
---|---|---|---|---|---|
1 | Thermajane Ultra Soft Thermal Underwear Long Johns Set | $24.99 High Mid | Thermal Underwear You Can Wear Indoors and Outdoors | ||
2 | Herobiker Women's Thermal Underwear Set | $19.98 Mid | A Thin Set That Won't Constrict Your Movement | ||
3 | Qualidyne Women’s Thermal Underwear | $17.99 Mid | Keep Warm With High Neck Coverage and Draped Tailoring | ||
4 | Amazon Essentials Women's Thermal Long Underwear Set | $20.00 Mid | Get Super Comfy in a Cotton and Polyester Blend Set | ||
5 | Rocky Fleece-Lined Thermals | $29.99 High Mid | A Thin and Comfortable Thermal Underwear Set | ||
6 | Lapasa Fleece-Lined Thermal Underwear Long John Set | $12.00 Low | A Lightweight Set That Won't Shrink | ||
7 | Jzcreater Tight Top & Bottom Long John Set | $20.99 Mid | A Soft Set That's Easy to Layer Over | ||
8 | Gilbin Ultra Soft Thermal Underwear Set | $14.99 Low Mid | A Set Ideal for Layering With a Warm, Soft Lining | ||
9 | Emprella Thermal Underwear for Women | $18.99 Mid | A Soft Set With a Bit of Stretch | ||
10 | In'voland Women's Plus Size Thermal Long Johns Set | $33.99 High | A Thermal Underwear Set for Plus-Sized Women |
This set is perfect for a winter hike. It has UPF 50+ protection, keeping your skin safe from UV rays when you're outdoors on a cold day. It's moisture-wicking, so the material won't trap your sweat. The top has a crew-neck collar that won't constrict your neck.
Some reviewers didn't like the feel of the fabric against their skin, saying it's quite scratchy. Others said that the sizing of these sets run small. However, many reviewers liked that this set is lightweight and keeps them warm. They also said that the moisture-wicking fabric makes this set fit for other seasons besides winter.
This comfortable set will keep in your heat without sacrificing breathability and flexibility. Thanks to its four-way stretch material, you can move about freely while staying warm. Plus, it's thin enough to layer over.
Some reviewers disliked the inconsistent sizing of this set, and others said it's not warm enough for very cold weather. However, many reviewers said that the material is super comfortable. They also liked that the fabric is quite stretchy.
This thermal underwear set comes with a top with a high collar, keeping in more of your body heat. It has flat seams and draped tailoring, so it will feel more comfortable against your skin. Its fabric is breathable and light, so it'll keep odors from settling in.
A few reviewers said that this set is too thin to wear alone. A few also found the neck too small. However, many loved its comfort and softness. Others liked its fit, saying it's snug enough to keep some heat in without being bulky.
This thermal underwear set is made of a blend of cotton and polyester, making it breathable, comfortable, and soft. It also has elastic ribbing at its cuffs to help keep warmth sealed in.
Some reviewers said that the set has a loose, baggy fit, and a few didn't like that the crotch of the pants hangs low. However, many reviewers liked the cozy feel of this relaxed set. Others liked that it's lightweight yet warm.
This thermal underwear a blend of thin materials, including an inner fleece lining. It's also got a tagless label, so you won't have to deal with an itchy neck. It's also moisture-wicking, helping to keep you dry when you sweat.
Some reviewers complained that the set's sizes run too small. Others said that the quality of the fabric is cheap. However, many reviewers loved that this set is comfortable and soft. Many said that it does a great job keeping them warm in cold weather.
This set includes a top with a scoop-neck collar that makes it easy to layer under tops with lower necklines. The set is made of thin, flexible fabric that's been treated to prevent shrinking.
Some reviewers complained that the set's sizes run too small and recommended sizing up. Others said this set is too thin to wear in colder weather. However, most reviewers liked that the pieces fit well and are very soft.
Smooth on the outside but comfy on the inside, this set is made of a blend of polyester and spandex. The fabric keeps your body heat in without feeling scratchy against your skin. It's also breathable, reducing the chance of body odor. It has a low neckline, making it easy to layer over.
A few reviewers said that the sizes of this set run small. However, many reviewers loved the texture of the inner lining's soft material, saying it feels very comfortable against their skin. Reviewers also said this set keeps them warm without being bulky or heavy.
Planning on wearing something with a low neckline but still need to stay warm? This thermal underwear set has a scoop-neck that sits lower than a regular crew neck. Is in inner fleece lining keeps you extra warm whether you wear it on its own or as a base layer.
Some reviewers complained that their set came with odd labels, wondering if the pieces are actually from another brand. However, many reviewers loved the feel of the soft fleece lining, saying that it really kept them warm. They also liked that the pieces are thin enough to layer over.
This set of moisture-wicking thermal underwear is meant to be worn as a base, so it's thin enough to be layered over. Plus, it's made with a bit of spandex to add some stretch, making it more comfortable to move around in.
A few reviewers complained that they received products with loose threads, tears, or stains. However, many reviewers liked that it's soft, keeps them warm, and is thin enough for layering. They also noted that it fits well.
This thermal underwear set is designed for plus-sized women, with sizes ranging from 16 to 30. The polyester and spandex blend is lightweight, comfortable, and tear-resistant. The set also has an anti-pilling feature. Its low neckline is easy to layer over, too.
Some reviewers noted that the shirt seems shorter than in the photo, and others had issues with seams coming undone. However, reviewers said that it's really comfortable, warm, and stretchy. Many users enjoyed wearing the set as a base layer since it's discreet and smooth.
If you're looking to keep warm, check these out! We have a few recommendations that will do the job.
No. 1: Thermajane|Ultra Soft Thermal Underwear Long Johns Set
No. 2: Herobiker|Women's Thermal Underwear Set
No. 3: Qualidyne|Women’s Thermal Underwear
No. 4: Amazon Essentials|Women's Thermal Long Underwear Set
No. 5: Rocky|Fleece-Lined Thermals
View Full RankingThe descriptions of each product are referenced from content available on manufacturer, brand, and e-commerce sites.
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