10 Best Base Layers for Running Reviewed
Running in cold or extremely hot weather, whether it’s at night, in the early mornings or during the winter or summer months, can be a miserable experience if you’re not wearing the right gear.
By gear, we’re referring to your undergarments, a carefully selected base layer, other clothes, and of course, shoes. In this guide, we break down the best base layers for running after a careful research into the materials, features and overall comfortability of base layers.
Finding the right base layer is not only important for your overall performance but also keeps the body cool and dry when you’re in the middle of your training, delays muscle fatigue by keeping your body nice and compressed and upgrades your performance. Whether you’re looking for that compression layer or a different technology like wicking fabrics or wool, take a look at the following base layers that will elevate your training.
Before we start our list, keep in mind that a base layer must give you the feeling of a “second skin”. The base layer’s task is keeping your body dry and warm. Essentially, the base layer allows the sweat to leave your body and keeps the body warm by trapping the warm air around your skin. The water leaves your body, but the heat stays inside.
- Helly Hansen Long Sleeve Crew
- Merino Wool
- UA Treestand Base Top
- Moisture Control
- Tesla Women's Mock Long Sleeve
10 Best Base Layers For Running
1. Helly Hansen Men's HH Warm Ice Long Sleeve Crew
This wool base layer is available in 18 colors and dual tones, each as sleek as the next - Black with Flag Red and Racer Blue with Evening Blue are exceptional. Sophisticated technologies contrasted with a classic design fuse to create a high functioning, aesthetically pleasing base layer. Flatlock stitching and low-bulk cuffs mean comfortable fabrics and fit next to the skin. You need your base layer to work for you and look great, while simultaneously forgetting your wearing it at all. With the NH Warm Ice, mission accomplished!
Coupling merino wool with 43% polypropylene makes for excellent fabric that thermoregulates and feels right next to the skin while also providing both insulation and drying capacities. Patented Lifa T3 hollow fiber engineering keeps athletes even warmer during hardcore workouts in the coldest climates. The lean design and low bulk cuffs make throwing your layers over easy-breezy. Flat lock stitching adds essential smoothness with anti-chafing and less irritation. With warm wool and wicking properties together, you’ve found your perfect long sleeve base layer!
Medium price point with high end value.
Looking for an all-around base layer look no further we have the solution for you, functions are wide and regulate temperature at any given time provides insulation and drying capabilities while simultaneously forgetting you’re wearing it at all.
If you are an all-weather runner we have what you are looking for, one that can keep you warm when need be and can also help you cool down when there is need to due to its thermoregulatory function.
- Lifa T3 insulation and cooling
- Performance Merino Wool
- Low bulk cuffs for easy layering
- Refer to size chart; fits snug some run a size up.
2. Under Armour UA Treestand Base Top
The UA Treestand Base Top is an essential layering piece. With flatlock seams for better performance and a modern aesthetic, you’ll love it for all your athletics. And you won’t mind when the top layers come off - it looks that good! The Rifle Green with Velocity and Black hues look stunning. Accent piping gives the base layer a more enhanced athletic appearance and striking hue selections mean there’s something for every taste.
Under Armour uses its trademark UA Scent Control technology. The anti-microbial system keeps athletes feeling better and yes, smelling better during hard training. How cool is it that you can skip the shower and head to lunch in a crunch without worrying about odor? A high pile interior and ergonomic, flatlock seams with 100% polyester and wicking fabric mean looking sleek and feeling better. Stay warm, stay odor-protected and look chill. Thanks, UA.
How would you like to never smell of sweat even after your hardcore workouts, having to work out and never having the fear of what if my odor is bad? Well with this type of base layer is designed to control odor so that every time you work out you smell fresh this is so attractive right?
When you want to look hot and smell sweet even after a workout session we think you are in the right track. This base layers gives you the sense of confidence you require each time you work out.
- Anti-wicking fabric
- Ergonomic flatlock seams
- Some colors may not be available
3. Duofold Men's Mid-Weight Wicking Thermal Pant
A base layer pant can be crucial to a productive workout. These thermals dual-perform as an everyday, soft bottom and an incredible athletic base. Ankle length with an adjustable inner drawcord, the Mid Weight Wicking Thermal Pant boasts a calm, comforting aesthetic. Feel softness against your skin while you workout, rest or whatever. Feel confident these pants will get you through your tough training dry, cool and odor free.
Fabric comprised of 96% polyester and 4% spandex/jersey is soft while providing 360-degree stretch for flexible motion. The thermal fibers insulate, keeping your body warm and odor free.Flat-locked seams are smooth and prohibit chafing and irritation while the fabric itself provides full length wicking and quick drying. Small details with big impact include a tag-free elastic waist to assist with moisture control and irritation. A base layer pant should work hard so you can work out hard. This one definitely does!
Excellent price point.
- Soft thermal fibers fused with 360-stretch fabrics
- Tag-free elastic waist
- Odor control
- Limited colors
4. Hot Chillys Men's Micro-Elite Chamois Crewneck
An utterly stylized base layer top for all your training needs. The accent striping enhances the shoulders and chest while the fitted cut looks on-trend and athletic. Available in black or granite - definitely check out the granite - you’ll love the appearance of this crewneck and equally, the softness. Hard to believe something that looks and behaves so tough is simultaneously so gentle and comfy against your skin - we won’t tell!
We love that the Chamois is UPF 30+. With increasingly sunny days ahead, it’s crucial to have protection. Be confident you’ll stay free of morning chill, with a Warmth Factor of 8, too. Add flat seam construction for additional strength and resistance to abrasions, a sanded fabric for enhanced softness and Bio-Silver trademarked microbial fibers to resist odor and you’re soft, easy chamois is also your base layer machine.
Price point is fair - medium cost but enormous value.This type of layer is best known for stretching and flexibility,it provides,softness,warmth and enough comfort as well,so for the price you get that value,this is the all in one kind of scenario.
This is for the runners who are looking for a hard to believe, something that looks and behaves so tough and is equally gentle and comfy against your skin – tough to break easy on you kind of layer.
- Bio-Silver microbial fibers to control odor
- UPF 30+
- Warmth Factor 8
- Refer to sizing chart - runs tighter. Possibly best to order a size up.
5. Tesla Women's Coldgear Compression Mock Long Sleeve
This compression base layer mock long sleeve meets your feminine and athletic quotient. Feel on-trend, adorable and sporty in this well-crafted design. The soft white translates to a classic hue fitting for all seasons and climates. As durable as this base is, it’s also light and airy accomplishing a forget-it’s-there feel with technology that lets you focus on your workout while it focuses on assisting you with your all time best performance.
This contender encompasses the best of the best engineering, including the unique Hot Gear Technology which uses scientific based analysis to regulate the dissipation of body heat and maintain thermal insulation. The Over Heat Series base layers are designed to prohibit heat loss and stabilize temperature no matter the climate. 3-Dimensional, trademarked patterns coupled with heat maintaining fabrics boast ultimate comfort with best-insulation. All of this encapsulated in a micro-fleece fabric that feels oh-so soft against the skin and unbelievably light, too. A base layer that increases your performance with its high performing craftsmanship.
A price point that falls under the category of “shockingly” reasonable.
This type of base layer provides a 360-degree stretch for flexible motion and also the thermal fibers it has helps in insulation. Check this out, you get to be flexible in it as if that is not enough, you get to be warm in it.
For runners who want the flexible kind of pants that allow you to do every move during your work out, you just got it. Duo fold does the trick any day, giving the warmth you require while working out as well, with this we got you covered.
- Highly engineered technology to regulate body temperatures
- Light weight, thin micro-fleece fibers for optimum softness
- Excellent price
- Possibly purchase one size up, runs extremely fitted
6. CompressionZ Women's Leggings
We love the on-trend appearance of these sleek compression leggings. They fit snug in all the right places, offering excellent support and an attractive fit. With go-to, all-occasion capability, the CompressionZ Leggings are certain to be a favorite. Reasonably priced, we’re pretty sure you’ll want one in each color (nine, to be exact)! Choose Leopard Blue to appease your wild side or sophisticated Ferns Silver for day outings that transition into night’s at the gym. With odor free fabric, not only are they the perfect “everything” pant, you’ll love the way you can wear them from gym to park-and-play to dinner without missing a beat!
Sit back and relax - this may take awhile. The CompressionZ Legging helps to reduce unwanted muscle motion during runs or hard workouts. This assists in energy waste-reduction, ultimately improving your workout and stamina. The compression fabric also works to improve circulation and reduce muscle fatigue and pain during and after your training. This helps athletes to feel less soreness even days after strenuous workouts, too. The patented Smart Moisture Management system eliminates moisture and sweat and protects the body from chafing and abrasions or irritation. We love the antibacterial/anti-odor technology fused into the fabric. When you don’t have time to shower between the gym and lunch, you don’t have to worry - between the microbial protective system and the wicking fabric, you’ll feel fresh and ready for anything.
Average priced, but this pant does its duty as your go-to fashion legging and compression gear. Well worth it!The pants stand on their own hence eliminating the need to buy other compression clothing.Quiet amazing as it provides just the boost that your lower half needs and craves for.
we have to admit that not everyone likes to put on shorts,reasons best known by them that is why we feel that this compression pants will be your go to.they act as support on your lower half eliminating the need to shop for a number of compression clothing,they are a perfect choice since they also have a number of advantages with them.
- Best compression fabrics
- Wicking, breathable
- Anti-odor technology
- Compression fit will run snug, see size chart.
7. Smartwool Men's NTS Mid 250 Zip T
Jaw-dropping good looks may be the first thing that comes to mind when considering the Smartwool Men’s NTS Mid 250 Zip T, but trust us: this base layer isn’t that superficial! Full of modern technologies that promise to enhance your workout, you get to love the way you look and feel in this gorgeous design. Merino wool is soft and cozy and the colors are sophisticated and earthy at once. We love the Taupe Heather. ‘Urban Mountain Man’ comes to mind. Swoon.
This base layer covers every tech need to promote your better and more comfortable workout. Smart shoulder panels reduce the necessity of shoulder seams which means a smooth, irritation free fit. The flatlock seam adds to chafe-free, comfy wear and fine merino wool fibers creates an uber soft, itch-free environment for your body. SmartWool provides a moisture and temperature controlled environment that also prohibits odor. All of this provided in an UPF 50+ construct for ultimate sun protection. Fall in love with a slim fit base layer that looks amazing and keeps you healthy and productive during all of your activities.
Pricey but stunning. A must-have purchase for great looks with sun, fitness tech, and safety features.
Mid 250 Our warmest base layer. Works as a single layer in cool weather or as a base layer in cold weather ,perfect for winter runs, apart from this it also provides the masculine nice sexy look in a guy, we are not only trying to make you warm but also look great in the process. It’s a ‘win’ for you!
Smart wool Men’s NTS Mid, wear alone in cool climates or as a base layer in harsher conditions, Easy right? Get one of this keep it in all weathers.
- Smart shoulder panel
- Flatlock seams
- SmartWool technology for moisture, odor and temperature control
- High priced
A woman-specific design which includes a wide waistband for optimum fit with flattery, this lightweight legging is perfect as a base layer during chilly morning runs or alone as the weather warms. A merino wool, jersey knit is unparalleled in softness and exceedingly flex while snug enough to give support during all your play. “All” being the optimum word: these leggings are awesome for running errands, work, playtime with the kids, and of course running. Perfect workout gear with perfect fashion sense. Awesome!
Flatlock seams are smooth against the skin and promote an irritation free, anti-chafing relationship with your body. We love the contrast color stitching - a nice, subtle design detail for additional sleekness. Constructed with a Natural Rise, Form Fit patented cut, the leggings contour to give you a feminine and simultaneously athletic form. Jersey knit meets 100% merino wool for an uber soft and stretchy feel. The wide waistband promises attractive support. All of this in Smartwool’s lightest weight baselayer. Rugged features in embodied in soft, airy fabric. Perfect.
This specific one was made for spring,it has a wider waistband for enhancing fitness of the body.Also has the well flattened seams that prevent chafing, we know you want to look good so we go for the best look you want to pull. We don’t disappoint.
Smart wool Women's NTS Micro 150 Bottom Works as a single layer in warm weather or as a base layer in cool weather, double work.
- Jersey knit, merino wool for soft flex
- Natural Rise, Form Fit design
- Available in limited colors
9. Ibex Women's Zip T-Neck Base Layer Top
Ibex calls the Woolies 220 Zip T-Neck the “weekend warrior” - and we agree! This base layer does everything you need it to do and then some, with sophisticated, sleek style. Comprised of natural feeling, superfine wool, athletes and daytrippers alike stay warm and dry no matter what the adventure. Available in black and also blood orange (we love this bold hue), you’ll love the way you look in this durable base.
You’ll laugh in the face of chilly weather in this ultra cold-resistant base! A heavier fabric (220 g/m), this zip T-neck means business when it comes to keeping you warm. The only distraction from your adventure will be the soft feel of fine wool against your body. The set-in sleeves and smooth, flatlock seams lend to the on-trend and irritation free craftsmanship. Form fitting, the base contours to your body with flattery while also making it easy to throw additional layers over when necessary. With such stunning good looks, you’ll be glad when temperatures rise, those other layers come off and your Ibex Woolies 220 base can get the attention it deserves!
This is a higher priced base layer.
Woolies are beautifully made Merino layers made for more than just the winter months. With the elegant finish of wool and a clean, zip T-neck, rock this top all year long as the antidote to cooler weather, synthetic fabrics and conventional thinking. Just the right weight to wear over a tee or as a first line of defense against cold.
You’ll laugh in the face of chilly weather in this ultra-cold-resistant base. Because of the warmth it provides. You won’t feel the change in weather and you can wear the same face every day. A smile!
- 18.5 superfine wool yarn
- Odor resistant
- Body contouring flex and fit
- Two colors
- Slightly higher priced
10. Under Armour Men's HeatGear Armour Short Sleeve Compression Shirt
This base layer is made 84% polyester and 16% elastane and it’s very stretchy in the underarms and arms that allow movement and ventilation in those areas. Of course, the technology of the Moisture Transport System allows you to stay dry, as this compression shirt dries very fast. It’s available in 36 different colors, from the popular grays and blacks to flashy yellows and orange. Looks great in style as well.
This compression shirt is very soft and weighs very little, but that doesn’t mean that you won’t feel supported. It has the fabric technology of “Heatgear Armour” developed by Under Armour. This means that the fabric keeps you “cool, dry and light” in any conditions that you find yourself.
As an additional bonus, the shirt is UPF 30+ which allows you to be protected from the sun’s rays.
Depends on the color and sizing, but overall low to high end value
Very comfortable base layer that you can use in cold or hot climates. Gives you breathability and mobility that you need, so that nothing interferes with your training.
A great option for those looking for a stylish shirt that feels comfortable. It has all the qualities that you would look for in a base layer, plus you could wear it all day long if you wish to do that.
Under Armour HeatGear Technology
- Comfortable and great mobility
- Not all sizes are available in every color
This wraps up our guide to the 10 best base layers for running. By now you’ve found your just-right short, tight, compression legging, wicking top or contoured zip layer. With so many tech and design options, there’s a perfect fit for everyone and we’re certain you’ve found yours!
The Criteria We Used for Our Evaluation of the Best base layers for running.
Of course, when it comes to running, it’s not only about the running shoes. There are so many other variables to improve your endurance and overall workouts. A base layer is a prime example that can set you apart to become your best.
There are some factors to consider when you’re looking to buy a new base layer. We don’t only look for the best and new base layers, we also look for the biggest trends and the best reviews. Below you will find the criteria we used for this list:
Breathability depends on many factors. It starts with the quality used in the products that allow for the right ventilation and thickness vs lightweight in the material. A great example of a lightweight breathable material is the Merino Wool fabric. This fabric keeps away bad odors and keeps you warm, that’s why it’s best to use in cold climates. Other fabrics that offer great breathability are synthetic fabrics that offer wicking properties. This means that the base layers don’t really absorb the sweat, rather they transfer it away from your skin. Unlike other fabrics, this is best used in humid and wet climates.
Another important factor that we take into consideration is how durable the base layer will be. In order to save on cost and keep wearing the same base layer for a long time, we need to take into account the test of time. Merino Wool has been questioned because it is soft and will most likely develop holes with its usage. Therefore, it’s not as durable as the other fabrics.
It’s crucial to read the washing instructions as it will help you extend the base layer’s lifetime. This will allow you to ensure that the fabric remains intact and durable. Some manufacturers are mixing different fabrics together in order to get one product that is stronger. Of course, there are also some other variables such as how comfortable the product feels on the skin, the technology used and how to make the base layer last without compromising its quality.
For the best performance, base layers must fit in tightly which will help the material to pull the moisture from your skin. Some people like to use it as an additional layer and that makes the product less functional. Consider getting a base layer that fits in tightly and avoids looking at the style because of looks.
Is it Thick and Warm?
When measuring the warmth of a base layer, consider its weight. There are different types of weight – lightweight mid-weight and the heavyweight. Depending on your level of activity and different times of seasons will determine what type of base layer you will need. Lightweight is the best for breathability, for example, however, it does not allow you to stay warm. If you’re looking to stay warm and use a base layer in colder climates, then you might consider the Merino Wool fabric as it offers a great deal of temperature control. Mid-weight is right in the middle. It has just enough weight for the cold weather and also breathable quality for the hot, summer months. Be prepared and make sure you have everything covered. You might want to get one of each in order to be prepared.
Base Layer Material
This material defines the durability, breathability, and comfortability of the gear. The material is most likely what will keep you cool or warm, therefore, be careful and don’t pick your base layer based on a style by compromising the quality of the material. Merino Wool is usually the higher costs because of its ability to be soft and comfortable, it has superior temperature regulation and anti-odor ability, but it’s expensive and less durable than polyester. Even though it is the most expensive, it is worth the buy.
Then we have the blends. Manufacturers mix different materials to acquire the desired quality. Some brands like Arc’teryx and Patagonia provide a mix of materials and provide the comfort of merino wool and the long-lasting trait of polyester.
Other Important Factors To Consider
Odor prevention is a consideration when picking the best base layer. It’s a great option if you like the merino wool material as it keeps your skin dry and prevents the smell of odors when you sweat.
Base layers have different uses as you can wear it as an under layer, mid-layer or exterior layer during the winter months for running or during the fall or spring for hiking. The thickness of the fabric will have a big impact on the insulation and breathability. Make sure you keep in mind the best use for a base layer and the reasons why you should get one.
When the base layer is compressed to your body, it allows to remove the water from your sweat and keep your skin feeling dry. That’s why a compression base layer keeps your body’s temperature regulated. As a result, you most likely will not feel the lactic acid in your muscles and you will avoid cramping since the chances of developing cramps will be reduced as the muscles are being compressed.
A base layer that is effective is a base layer that has a moisture wicking fabric of some sort. That means that the moisture is being evaporated from your skin to the outside and is still keeping the body warm. The fibers are allowing you to avoid staying wet and become cold. That’s why you want to select a base layer that has the right materials in the fabric.
Since you’ll most likely be outside running, take a look at how much UV protection the base layer will have. If it says 100% SPF, then that means that it can protect you from all kinds of rays. Even if you’ll use your base layer in cool weather, the sun can still penetrate through, so you want to be covered.
Below you will find some frequently asked questions when it comes to base layers. Some runners have asked them before when they were looking for the best base layers for running.
Q: What does it mean staying cool and warm? How is that possible with the same compression shirt?
A: It can be a little tricky, but we mean that you want your body to stay warm during your training when you’re in cold climates. Naturally, when you train, your body is warm and sweat is your body’s way to regulate your body temperature. You want the sweat to leave your body and keep your body warm.
The base layer must be able to remove the water and keep your skin dry. As a result, since your skin is dry, then you don’t have anything wet wearing you down. In hot climates, you want to be able to stay cool so that you don’t feel overheated.
Q: Which material is best for all season running?
A: You want a fabric that will keep moisture away from your skin, leaving you cool and dry. Naturally, this depends on different seasons and weather situations. We would still suggest the merino for its use year-round since it performs best in all seasons. You can also check out the polyester as it has some other great qualities that any runner would want in a base layer.
Q: How often should I replace my base layer?
A: Since it really depends on how often you use it, how you take care of it and other factors, your base layer should be replaced when you see something new on the market, when your base layer is no longer usable or simply because you want to try another base layer to improve your performance.
Keep in mind taking care of the base layer will influence your decision on when to get another one, especially washing and drying. Merino is soft but prone to have holes faster than other materials, but if you go for one of the mix materials, you can end up having a more durable base layer and prolong the life of one.
Q: Which is the best anti-odor base layer to use for a sweaty runner?
A: Sweat can be annoying, but mostly if it has a scent. This is embarrassing and difficult to hide, we understand. We would love to make you feel fresh even after a long marathon or just a vigorous running exercise. Merino wool does best in pulling moisture away from your skin and does a great job avoiding any stinky build ups.
Q: What’s the best long sleeve base layer?
A: In our opinion, something that has Merino wool in it. Merino wool keeps you warm in cold weather and keeps you cool in the heat. The wool on a Merino has evolved to vaporize sweat during the summer to give you an anti-odor experience. It may seem strange, but Merino wool will be one of the most effective materials that keep you cool on a 90-degree day. The fact that many manufacturers prefer this material is a testament to its quality and effectiveness.
Q: Why not use a cotton base layer?
A: Cotton is known for its absorption features and also for its effectiveness in retaining water. When it comes in contact with water it immediately gets wet, it doesn’t vaporize. That’s why cotton is not suggested as it becomes a barrier to holding in moisture against one’s skin. This leads to irritation of the skin. There are no environments, hot or cold, where that’s desirable. Cotton likes to hold onto water, unlike other fabrics that will tap it out and make it evaporate. No one desires to stay dump in any cloth.
Check out some of the sources we used during our research: