When packing for your next trip, choosing the right base layer is an important decision. Regardless of my itinerary, I always have one or two in my luggage. Having lightweight, breathable, and moisture-wicking ones can make all the difference in keeping me comfortable, especially if I plan to do strenuous activities. This can be your reality, too, if you have the right lightweight base layers. Forget scratchy fabrics and uncomfortable fits. These base layers are meant to be worn closest to your skin, helping regulate your body temperature and keeping you comfy. Today, I’m going to help you navigate the maze of options on the market so you can wear only the best base layers. Whether you’re trekking through rainforests or strolling through cobbled streets, I’ve got you covered!
Table of contents
- Umbro Base Layer Thermal Top
- Under Armour Base 2.0 Crew
- Helly-Hansen LIFA Merino Half-Zip Base Layer
- Fruit of the Loom Recycled Waffle Thermal Top
- Helly-Hansen LIFA Stripe Base Layer
- 32 Degrees Lightweight Baselayer Crew Top
- MERIWOOL Merino Thermal Shirt
- Smartwool Classic Thermal Merino Base Layer Crew
- Carhartt Force Lightweight Base Layer
- Arc’teryx Rho TL Zip Neck
- Under Armour Tech 2.0 1/2 Zip
- Minus33 Lightweight Ticonderoga Crew Shirt
- Icebreaker Merino 200 Oasis Long Sleeve Crewe Thermal Top
- Our Verdict!
- How To Choose The Best Lightweight Base Layers for Travel?
- What is the best base layer for hot weather?
- What is the best base layer for cold weather?
- Is merino wool lightweight?
Umbro Base Layer Thermal Top
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Kicking off this list is the Umbro Base Layer Thermal Top, which offers a compelling balance of comfort and performance. When I first received this top, I was immediately in love because of this tagless design and flatlock seams, which just screamed comfort. Meanwhile, the polyester-spandex blend fabric moved smoothly with my body, offering me a supportive and comfortable fit that’s usually offered by more premium options.
Though affordable, this base layer is packed with tons of features. It has a sweat-wicking technology that helps you stay dry and fresh, even during intense workouts. In addition to that, it’s also a versatile choice. Wear it as a base layer under any outfit for added warmth in cold weather or as a rashguard for water activities. Fret not; its slim fit allows for layering without bulk.
Pros
- The flexible fabric allows for unrestricted movement.
- Though cheap, it doesn’t sacrifice quality.
- It’s both fast-drying and odor-fighting.
Cons
- All the three available colors look similar.
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Under Armour Base 2.0 Crew
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Best Compression. The Under Armour Base 2.0 Crew is a lightweight, breathable base layer designed for high-activity performance in cool conditions. Thanks to the 100% polyester fabric, this crew top is lightweight and great for layering. But perhaps its MVP is its moisture-wicking technology. The combination of these two effectively pulled sweat away from my skin and dried quickly, keeping me comfortable during testing.
Moreover, the four-way stretch construction allows unrestricted movement in any direction, ensuring you can perform at your best without feeling restricted. Moreover, the soft, brushed grid interior traps air, providing warmth without being bulky. I wore it for running back then, but I think it’s also great for other cool-weather activities like skiing and hiking. Speaking of, have you read this list of the best hiking clothes for spring?
Pros
- It features the UA Scent Control Technology that helps prevent the growth of odor-causing bacteria.
- This top can be layered under other garments for added warmth.
- It has amazing moisture-wicking technologies.
Cons
- The polyester material feels less natural than merino wool.
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Helly-Hansen LIFA Merino Half-Zip Base Layer
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Are you wondering what to wear for spring skiing? Stay toasty and dry on your next adventure with the Helly-Hansen LIFA Merino Half-Zip Base Layer. This base layer combines the best of both worlds: LIFA fibers to wick away sweat and keep you dry, as well as merino wool for unmatched insulation even when damp. Besides, I also appreciated the raised collar and lined interior, which offered me an extra layer of warmth. Oh, the soft flap and chin guard also prevented me from getting irritated.
Despite its thin and lightweight profile, this base layer packs a punch. It offers enough insulation for cold-weather activities without weighing you down. Also, you don’t have to worry about wear and tear. It has undergone our washing tests, and even after multiple washes, it still manages to retain its shape. Since this is a premium product, you sure get the quality worth the extra money. Need more convincing? Watch this review video by Adventure Rig!
Pros
- It comes with flatlock seams to eliminate chafing.
- With a slim-fit design, layering is a breeze.
- It’s a multipurpose base layer that can be worn for camping, hiking, trekking, skiing, and more.
Cons
- Some might find it too pricey.
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Fruit of the Loom Recycled Waffle Thermal Top
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Best Eco-Friendly. Craving a base layer that’s kind to the planet and your body? Check out the Fruit of the Loom Recycled Waffle Thermal Top. Don’t be fooled by its eco-conscious design – this thermal top is reliable when it comes to insulation. During testing, the unique waffle weave fabric trapped heat effectively, keeping me toasty on the trails without feeling weighed down. The moisture-wicking material ensured I stayed dry and comfortable all day.
This thermal top is all about making the wearer feel good. A stretchy design allowed me to have a full range of motion without feeling restricted. Plus, the flat seams eliminate chafing, and the elastic waistband provides a secure yet comfortable fit. This base layer ticks all the boxes for skiers seeking a comfortable, warm, and sustainable option.
Pros
- It’s one of the most eco-friendly base layers.
- It’s lightweight, stretchy, and breathable.
- It’s also available in plus sizes.
Cons
- It’s too small for some people.
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Helly-Hansen LIFA Stripe Base Layer
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Say hello to another Helly-Hansen product. The Helly-Hansen LIFA Stripe Base Layer might be easy on your wallet, but it doesn’t compromise on quality. The brand’s LIFA Dry fabric wicks away sweat like a champ and can dry in a flash, making it ideal for intense activities where you break a sweat. I’ve worn it before, and though I can say that it’s not the warmest option, the comfortable, close-fitting design with flatlock seams makes it perfect for layering under other pieces.
What about the details? Well, everything is spot on. For instance, I was able to comfortably wear my gloves without any annoying gaps since the flat, fitted cuffs seamlessly integrated with them. Whether you’re carving down snowy slopes or conquering challenging hikes, this base layer is your perfect partner. It provides just the right amount of insulation to keep you warm and dry during active days without weighing you down.
Pros
- The snug cuffs fit seamlessly under gloves.
- It’s available in extra-large sizes, too.
- This base layer can be worn by men and women.
Cons
- It’s not as warm as many other base layers.
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32 Degrees Lightweight Baselayer Crew Top
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Ditch your old bulky base layer that restricts your movements and try the 32 Degrees Lightweight Baselayer Crew Top instead. This crew top is lightweight, so you can comfortably wear it under a thicker sweater or jacket without feeling like a Michelin Man. When I wore it, I loved how it moved with me. I was able to move my midsection and arms freely. The close-fitting design hugged my body without feeling constricting. A+ for mobility!
“Though simple, it’s one of the comfiest base layers you can find on the market. Plus, it’s cheap!”
WOW Travel
Another highlight of this crew top is its anti-static protection, keeping you comfortable and shock-free all day long. No more embarrassing zaps when you greet your friends after a day bundled in wool. Best of all, this base layer is ridiculously cheap. If you want a wallet-friendly option that’s also lightweight and warm, this is the one.
Pros
- It has a tag-free design for added comfort.
- The four-way stretch fabric moves with you, not against you.
- It can also be used for workouts in the gym.
Cons
- The sleeves are too long for some people.
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MERIWOOL Merino Thermal Shirt
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Best Value Merino. Looking for an affordable 100% merino shirt can feel like searching for a needle in a haystack. Thankfully, there’s the MERIWOOL Merino Thermal Shirt. Among all of the thermal shirts I’ve tried, this is one of the most perfect for layering. It’s not a heavyweight champ, but its thinness and lightweight means it disappears under pretty much anything you throw on. During testing, I was able to wear it comfortably under a windbreaker and even a bulky jacket.
Though more affordable than many other merino thermal shirts on the market, the quality of this shirt shouldn’t be overlooked. This magic layer adds invisible comfort, wicks away sweat effectively, and even traps heat. As expected from the pure merino wool material, this shirt can tackle odors, too. While wearing it, I didn’t ever have to worry about smelling weird or stinking up my jacket.
Pros
- This thermal shirt is designed for both men and women.
- It’s machine washable.
- It comes with a loop so you can hang dry it.
Cons
- It’s a bit too small for larger people.
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Smartwool Classic Thermal Merino Base Layer Crew
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The Smartwool Classic Thermal Merino Base Layer Crew is another popular choice for outdoor enthusiasts seeking warmth, comfort, and odor resistance. It offers all of those because of the 100% Merino wool construction. It regulates temperature amazingly well. I’ve worn this crew a few times, and it kept me warm in cold weather and cool in warmer conditions. It’s such a versatile piece!
Meanwhile, the interlock knit provided me with a soft, comfortable feel against the skin. Not to mention, it also enhances durability. Thanks to the shoulder panels that eliminate the top shoulder seams, you no longer have to worry about chafing. Plus, this crew top is available in both slim and regular fits for men and women. For more merino clothing, check out these merino wool sweaters for men!
Pros
- The soft, lightweight fabric moves well with your body.
- It keeps you dry and comfy even during exertion.
- It’s a versatile choice for skiing, hiking, climbing, and other outdoor activities.
Cons
- Some people wish it was more affordable.
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Carhartt Force Lightweight Base Layer
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Carhartt? Always a win. That said, the Carhartt Force Lightweight Base Layer is another product from the brand that I love. This isn’t just any base layer. Thanks to this lightweight crew shirt’s classic waffle knit designed to trap heat, I was able to carve down slopes toasty warm. However, it transcends the ski scene. You can also take it in on winter hikes, sweat it out at the gym, or layer it under your favorite jacket for everyday warmth.
Comfort? It’s off the charts. The fabric felt luxuriously soft, and the Rugged Flex technology allowed me to move freely, no matter the activity. Plus, say goodbye to chafing. Smooth flatlock seams ensure irritation-free adventures. But wait, there’s more! Ditch the annoying neck tag, as this top boasts a tagless design for ultimate comfort.
Pros
- One of the most durable base layers on the market.
- It’s a versatile choice that can be worn for various activities.
- It can fight odors and keep you fresh all day long.
Cons
- Some people have trouble choosing the right size.
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Arc’teryx Rho TL Zip Neck
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Best for Snowsports. The Arc’teryx Rho TL Zip Neck is a base layer designed for skiers and snowboarders who prioritize lightweight performance and comfort on the slopes. Despite that, it doesn’t mean it sacrifices warmth. When I tested this product, I was impressed by the Torrent fleece fabric. It offered me a surprising amount of warmth, so much that even chilly winds felt like nothing.
On top of that, the material also excels at wicking away moisture and allowing vapor to escape. This feature kept me feeling dry and comfortable, even during strenuous climbs. What about layering? With a trim fit, this base layer has minimum bulk, and you can layer it under other garments. I also loved how soft the fabric was against my skin. Chafing and irritation? I don’t know them! Learn more about this product and see more reviews on its official product page!
Also, you may want to pair this base layer with these mid-layers for skiing and snowboarding.
Pros
- This base layer is stretchy, lightweight, and breathable.
- It’s great for snowsports.
- Keeping it clean is a breeze as it’s machine washable.
Cons
- It’s on the pricier side.
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Under Armour Tech 2.0 1/2 Zip
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Best Style. Gear up for chilly hikes with the Under Armour Tech 2.0 1/2 Zip, a long-sleeved companion built to defy the elements. Forget fumbling with bulky layers – this base layer features a smooth-operating, durable half zip that lets you adjust ventilation on the fly. To test it, I wore it on a hike, and from battling brisk winds to warming up after a steep climb, I could stay comfortably covered without sacrificing mobility. And for layering, you can wear it under one of these best winter hiking jackets.
Under Armour’s signature Tech fabric is the secret weapon against sweat. It wicked moisture away from my skin and dried lightning-fast, keeping me cool and dry even during intense activity. Plus, the streamlined fit is lightweight and breathable, ensuring maximum freedom of movement on the trail. It’s a reliable pick that helps you regulate your temperature, stay comfortable, and move freely so you can focus on conquering the next peak, not your clothes.
Pros
- The half-zip design is great for ventilation control.
- This base layer is highly breathable and can trap heat without stuffiness.
- There are so many different colors to choose from.
Cons
- Though warm, it’s not the warmest option in its price range.
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Minus33 Lightweight Ticonderoga Crew Shirt
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How can you talk about the best lightweight layers without mentioning this popular base layer? The Minus33 Lightweight Ticonderoga Crew Shirt is designed to be comfortable, breathable, and odor-resistant, making it a versatile option for outdoor activities. This is a 100% merino wool crew shirt. Because of this material, I was able to stay comfy even though I was sweating like mad. The fabric dried quickly, and I was able to continue my hike comfortably.
Another thing I love about this base layer is its naturally odor-resistant properties. This allows you to stay fresher for longer, no matter how sweaty you get. Furthermore, it offers some protection from harmful UV rays, too. With UPF 25 sun protection, it’s a suitable choice for sunnier days. How could you not love this awesome base layer?
Pros
- It’s easy to take care of as it’s machine washable.
- This base layer comes in several colors to suit your style.
- It’s comfortable and versatile for layering or wearing on its own.
Cons
- It’s a pricey choice.
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Icebreaker Merino 200 Oasis Long Sleeve Crewe Thermal Top
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Best Overall. Checking all the right boxes, the Icebreaker Merino 200 Oasis Long Sleeve Crewe Thermal Top is my favorite base layer. And with almost 1,000 glowing reviews on its official page, you have endless reasons to get this top. Crafted from 100% luxuriously soft merino wool, this base layer didn’t just keep me warm on the slopes – it also helped me stay focused and comfortable. Even better, it’s naturally odor-resistant so that you can confidently conquer the mountain (or the gym).
Imagine carving down powdery runs without that annoying itch or feeling weighed down by bulky layers. The breathable merino wool in this top magically regulates your temperature, keeping you warm when it’s cold and cool when things heat up. The magic doesn’t stop there! This ultra-versatile piece isn’t just for skiing. I’ve tested it for running and hiking, and it was a blast to wear. And the good news? It’s available in a range of stylish colors for both men and women, so you can look good while you feel amazing.
Pros
- This base layer pays attention to little details like offset shoulder seams and flatlock seams for added comfort.
- It’s among the most durable Merino base layers on the market.
- It has a drop-tail hem for extra coverage.
Cons
- It’s not a budget-friendly option.
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Our Verdict!
While all of the base layers above are nothing short of amazing, I think the best overall choice is the Icebreaker Merino 200 Oasis Long Sleeve Crewe Thermal Top. It has all the things you’d want from a base layer. However, I understand that it’s not for everyone. To help you pick the right option, I’ve categorized some of them based on the following criteria:
- Best Style: Under Armour Tech 2.0 1/2 Zip
- Best for Snowsports: Arc’teryx Rho TL Zip Neck
- Best Value Merino: MERIWOOL Merino Thermal Shirt
- Best Eco-Friendly: Fruit of the Loom Recycled Waffle Thermal Top
- Best Compression: Under Armour Base 2.0 Crew
How To Choose The Best Lightweight Base Layers for Travel?
Choosing the best base layers can be tricky as there are many factors to consider. Here are some of the most important things to keep in mind:
Material
First of all, you’ll want to look at the material. Choose base layers made of moisture-wicking synthetic or merino wool fabrics, as they can keep you dry. I also recommend choosing polyester, nylon, polypropylene, or a blend, as they’re breathable and quick-drying. These materials are often found in base layers for summer cycling, too.
Fit
The fit of the base layer should be relatively snug to sit close to your skin in order to wick moisture away effectively. However, it should not be too tight to restrict movement. Make sure the length is adequate as well when doing activities with arms raised.
Warmth
Consider the warmth rating and your specific needs. Lightweight options typically range from lightweight to midweight warmth. If you tend to run cold, go with a midweight base layer that will provide more insulation without the extra bulk or weight. If you’ll be in warmer climates, a lightweight pick will add breathability.
What is the best base layer for hot weather?
For hot weather, you can opt for base layers made of synthetic fabrics like polyester, as they can wick moisture away and keep you dry. Plus, they’re lightweight and breathable. Merino wool is also a good material as it’s a natural fabric that has natural moisture-wicking and odor-resisting properties.
What is the best base layer for cold weather?
The best material for cold weather has to be merino wool. Since it can regulate body temperature well, it’s also a good choice for cold weather. It can wick moisture away while retaining insulating warmth. Some brands also blend merino wool with synthetic fabrics to optimize moisture wicking and warmth.
Is merino wool lightweight?
Yes, merino wool is a lightweight fabric. In fact, it’s lighter than cotton, which is why it’s often used to make athletic gear.
