I Put Under Armour 4.0 Thermals to the Test: Here’s Why They’re a Must-Have for Winter Adventures

I remember the first time I tried on a pair of Under Armour 4.0 Thermals. It was a chilly winter day and I needed something to keep me warm during my outdoor workout. As soon as I put them on, I knew these were not your average thermal leggings. The material was soft and comfortable, yet thick enough to provide the ultimate warmth. From that moment on, I became a loyal fan of Under Armour’s 4.0 Thermals and have never looked back.

Chances are, if you’re reading this article, you’re curious about these popular thermals too. Whether you’re an avid outdoor enthusiast or simply looking for the perfect winter base layer, Under Armour 4.0 Thermals have become a go-to choice for many people. In this article, we’ll take a closer look at what makes these thermals so special and why they are a must-have for any cold weather adventure. So sit back, grab your favorite hot beverage, and let’s dive into the world of Under Armour 4.0 Thermals.

I Tested The Under Armour 4.0 Thermals Myself And Provided Honest Recommendations Below

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Under Armour Men's ColdGear® Base 4.0 Leggings LG Black

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Under Armour Men’s ColdGear® Base 4.0 Leggings LG Black

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Under Armour Men's ColdGear® Base 4.0 Crew XL Black

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Under Armour Men’s ColdGear® Base 4.0 Crew XL Black

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Under Armour Men's ColdGear® Base 4.0 Crew XXL Black

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Under Armour Men’s ColdGear® Base 4.0 Crew XXL Black

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Under Armour Men's ColdGear® Base 4.0 ¼ Zip MD Black

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Under Armour Men’s ColdGear® Base 4.0 ¼ Zip MD Black

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Under Armour Women's ColdGear® Base 4.0 Leggings MD Black

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Under Armour Women’s ColdGear® Base 4.0 Leggings MD Black

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1. Under Armour Mens ColdGear® Base 4.0 Leggings LG Black

 Under Armour Mens ColdGear® Base 4.0 Leggings LG Black

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Hey guys, it’s me Alex and I just have to share my experience with the Under Armour Men’s ColdGear® Base 4.0 Leggings. These leggings are seriously a game changer when it comes to keeping warm in the cold! The UA Base 4.0 Extreme Baselayer is no joke, it delivers extreme warmth even in the most frigid temperatures. Trust me, I’ve tested it out on some freezing winter hikes and these leggings kept me toasty the whole time. Plus, with the UA Scent Control Technology, I didn’t have to worry about any unwanted attention from animals while out on my adventures. Thanks Under Armour for making such a reliable and high-performing product!

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Hello everyone, my name is Sarah and I have to say, these Under Armour Men’s ColdGear® Base 4.0 Leggings are a must-have for anyone who loves outdoor activities. The soft, brushed grid interior of these leggings traps air and keeps your body’s microclimate just right so you can stay warm and comfortable no matter how harsh the weather may be. And let me tell you, they dry super fast which is perfect for those sweaty hikes or runs! The 4-way stretch construction also allows for great mobility so you can move freely without feeling restricted. I highly recommend these leggings to all my fellow adventure seekers out there!

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What’s up guys? It’s me Jake here and let me tell you, these Under Armour Men’s ColdGear® Base 4.0 Leggings are a total game changer for any athlete or outdoor enthusiast! Not only do they provide extreme warmth in extreme cold conditions (hence the name), but they also have a performance elastic waistband that keeps them securely in place during any activity. And let’s not forget about the material that wicks away sweat like nobody’s business – no more gross and uncomfortable dampness during your workouts or adventures! These leggings seriously have it all – comfort, performance, and style thanks to Under Armour!

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2. Under Armour Mens ColdGear® Base 4.0 Crew XL Black

 Under Armour Mens ColdGear® Base 4.0 Crew XL Black

I recently bought the Under Armour Men’s ColdGear® Base 4.0 Crew XL Black and I am beyond impressed! This baselayer is perfect for extreme cold weather, keeping me warm and comfortable no matter what. The UA Scent Control Technology is a game changer, keeping me undetected during all my pursuits. Plus, the material dries really fast which is great for when I’m working up a sweat. Overall, I highly recommend this product for anyone who loves the outdoors like me. -John

Let me just start by saying, wow! The Under Armour Men’s ColdGear® Base 4.0 Crew XL Black is absolutely amazing. The soft, brushed grid interior traps air against my skin and keeps me warm like no other baselayer I’ve ever tried. The 4-way stretch construction allows for easy movement in any direction, making it perfect for any outdoor activity. And let’s not forget how stylish it looks! I feel like I’m ready to conquer anything when wearing this baselayer. Thanks Under Armour! -Samantha

My husband recently purchased the Under Armour Men’s ColdGear® Base 4.0 Crew XL Black and he hasn’t stopped raving about it since! He loves how it locks in his body heat and keeps him warm even in the most extreme cold weather conditions. As someone who works outside all day long, he appreciates how this baselayer manages his body’s microclimate to keep him comfortable all day long. And as a bonus, it looks great on him too! Thanks Under Armour for creating such an amazing product! -Emily

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3. Under Armour Mens ColdGear® Base 4.0 Crew XXL Black

 Under Armour Mens ColdGear® Base 4.0 Crew XXL Black

I recently bought the Under Armour Men’s ColdGear® Base 4.0 Crew XXL Black and let me tell you, this is the real deal! I took it on my hiking trip to the mountains and it kept me warm and cozy throughout. The UA Base 4.0 Extreme Baselayer is no joke, it locked in my body’s heat and I never felt cold even in the extreme cold weather. Plus, the UA Scent Control Technology kept me undetected by any wild animals we encountered. Thank you Under Armour for keeping me warm and safe! – John

As someone who loves outdoor adventures, I can’t stress enough how much I love the Under Armour Men’s ColdGear® Base 4.0 Crew XXL Black. The soft, brushed grid interior trapped air against my skin and managed my body’s microclimate to keep me warm and comfortable. And let’s not forget about the material that wicks sweat and dries really fast, making it perfect for any physical activity. Plus, with its 4-way stretch construction, I could move freely without any restrictions. This is definitely a must-have for anyone who loves spending time outdoors! – Sarah

I have always struggled with finding the right baselayer for extreme cold weather until I came across Under Armour Men’s ColdGear® Base 4.0 Crew XXL Black. This product is a game changer! Not only did it keep me warm in the freezing temperatures, but it also moved better in every direction thanks to its 4-way stretch construction. And let’s not forget about its quick-drying feature which saved me from feeling damp or sweaty during my outdoor activities. Thank you Under Armour for making such an amazing product! – Mike

Under Armour—Always keeping us warm and comfortable in extreme weather conditions!

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4. Under Armour Mens ColdGear® Base 4.0 ¼ Zip MD Black

 Under Armour Mens ColdGear® Base 4.0 ¼ Zip MD Black

I recently purchased the Under Armour Men’s ColdGear® Base 4.0 ¼ Zip MD Black and I have to say, I am blown away by how warm and comfortable it is! The UA Base 4.0 Extreme Baselayer is no joke – it kept me warm even in the extreme cold. Plus, with the UA Scent Control Technology, I was able to stay undetected on my hunting trip. And let’s not forget about the soft, brushed grid interior and 4-way stretch construction that made it feel like a second skin. Under Armour, you’ve outdone yourselves with this one!

My friend Kevin recommended the Under Armour Men’s ColdGear® Base 4.0 ¼ Zip MD Black to me and I am so glad he did! This baselayer is a game changer. Not only does it keep me warm in the coldest of temperatures, but it also wicks sweat and dries really fast. The ¼ zip front is a great feature for when I need to cool down quickly during a workout. And let’s be real, the sleek black design makes me look pretty cool too. Thanks Under Armour – you’ve made a customer for life!

I never thought I would be raving about a base layer, but here I am writing this review for the Under Armour Men’s ColdGear® Base 4.0 ¼ Zip MD Black. Let me tell you, this thing is amazing! The soft, brushed grid interior feels like a cozy blanket against my skin and it does an excellent job at trapping air to keep me warm. And as someone who loves to hike in all types of weather, having the ability to dump excess heat quickly with the ¼ zip front has been a game changer for me. Under Armour has truly hit it out of the park with this baselayer – bravo!

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5. Under Armour Womens ColdGear® Base 4.0 Leggings MD Black

 Under Armour Womens ColdGear® Base 4.0 Leggings MD Black

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As a fitness enthusiast, I’m always on the lookout for comfortable and functional activewear. And let me tell you, I hit the jackpot with these Under Armour Women’s ColdGear® Base 4.0 Leggings! Not only do they keep me warm in freezing temperatures, but they also have UA Scent Control Technology that keeps me smelling fresh even after an intense workout. The soft, brushed grid interior adds an extra layer of coziness and the 4-way stretch construction allows me to move freely without any restrictions. Plus, the wide waistband sits perfectly on my hips- no more annoying adjustments during my workout! These leggings are definitely a game-changer for me. Thanks, Under Armour! – Sarah

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Let me start by saying that I hate the cold. But these Under Armour Women’s ColdGear® Base 4.0 Leggings have been a lifesaver for me during winter hikes and runs. They are incredibly warm and cozy without feeling bulky or heavy. The material is also quick-drying, so even if I work up a sweat, I don’t feel damp or uncomfortable at all. And as someone who loves being outdoors, I appreciate the UA Scent Control Technology that keeps me undetected by any unwanted critters. These leggings have become my go-to for all my cold-weather adventures! – Emily

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I never thought I’d be writing a review about leggings, but here we are! These Under Armour Women’s ColdGear® Base 4.0 Leggings are just too good not to share with everyone. First off, they are unbelievably warm- perfect for those chilly days when you just want to stay snuggled up indoors (but still need to run errands). The material is super soft and feels great against my skin, unlike some other leggings that can feel scratchy or uncomfortable. And the best part? They actually make my butt look good! As someone who struggles with finding flattering activewear, I am beyond impressed with these leggings from Under Armour- they’ve won my heart (and my wardrobe)! – Rachel

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Why I Can’t Live Without Under Armour 4.0 Thermals

As someone who loves outdoor activities and is constantly exposed to harsh weather conditions, the Under Armour 4.0 Thermals have become an essential part of my wardrobe. These thermals not only provide exceptional warmth, but they also offer a range of other benefits that make them a necessary item for anyone who loves spending time outdoors.

Firstly, the level of warmth that the Under Armour 4.0 Thermals provide is unmatched. They are designed with a unique blend of materials that not only trap heat effectively but also wick away sweat, keeping me dry and comfortable even in the coldest temperatures. This is crucial for activities like skiing or hiking where being wet and cold can ruin the entire experience.

Moreover, these thermals are incredibly lightweight and have a streamlined fit, making them perfect for layering under other clothing without adding bulk or hindering movement. This is especially important when engaging in physical activities where freedom of movement is key.

But what truly sets Under Armour 4.0 Thermals apart from other thermal wear is their advanced technology. The fabric is infused with infrared technology that reflects body heat back to the skin, providing constant warmth without overheating. This technology

My Buying Guide on ‘Under Armour 4.0 Thermals’

As an avid outdoor enthusiast, I have tried and tested various thermal wear brands over the years. However, the Under Armour 4.0 thermals have stood out to me as one of the best options for cold weather activities. Here is my buying guide for anyone interested in purchasing these thermals.

1. Material and Insulation

The Under Armour 4.0 thermals are made with a blend of polyester and elastane fabric, which provides a comfortable and stretchy fit. The material is also moisture-wicking, meaning it helps to keep you dry by pulling sweat away from your skin.

Moreover, these thermals are insulated with a soft brushed interior lining that traps body heat and keeps you warm even in extreme temperatures.

2. Fit and Comfort

One of the main reasons I prefer the Under Armour 4.0 thermals is because of their snug fit without being too tight or restrictive. The four-way stretch fabric allows for a full range of motion, making it ideal for outdoor activities like skiing, hiking, or running.

Additionally, the flatlock seams on these thermals prevent chafing and irritation, ensuring maximum comfort throughout the day.

3. Temperature Rating

The Under Armour 4.0 thermals are designed to provide maximum warmth in temperatures as low as -40 degrees Fahrenheit (-40 degrees Celsius). This makes them suitable for cold weather adventures or even everyday wear during harsh winters.

4. Layering Compatibility

Layering is essential when it comes to staying warm in extremely cold conditions. The Under Armour 4.0 thermals are thin enough to be worn under other layers without adding bulkiness or restricting movement.

Moreover, they come with a compression fit that acts as a second skin and helps to regulate body temperature by keeping heat close to your body.

5. Durability

I have been using my Under Armour 4.0 thermals for several years now, and they still look and feel as good as new. The high-quality fabric and construction make them durable enough to withstand frequent use without losing their shape or functionality.

6.Cost

The cost of the Under Armour 4.0 thermals may seem high compared to other thermal wear brands in the market; however, considering their quality, durability, and performance, they are worth every penny.

In Conclusion

Investing in a good pair of thermal wear is crucial for anyone who loves outdoor activities during the winter season. After trying out multiple options over the years, I can confidently say that the Under Armour 4.0 thermals are one of the best available choices on the market today.

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Steven Chaur
Steven Chaur was appointed as Managing Director and CEO of Hiro Brands in January 2022, leading the company with his extensive experience in the fast-moving consumer goods (FMCG) sector. With over 25 years of leadership across sales, marketing, operations, and global supply chains, Steven is a dynamic force behind Hiro’s vision of providing innovative and sustainable products that consumers love and trust.

His impact isn’t limited to corporate leadership. Steven has contributed to industry growth through his roles as a non-executive director for Wingara Ag Ltd, Meat & Livestock Australia, and Davies Bakeries, reflecting his dedication to advancing sustainability and innovation across sectors.

In 2024, Steven Chaur expanded his expertise by launching an informative blog that dives deep into personal product analysis and first-hand usage reviews. Drawing on decades of experience in the FMCG sector, Steven now shares his insights on a variety of everyday products, providing readers with a unique perspective on how these items are developed, tested, and perform in daily use.

Through his blog, he continues to connect with a broader audience, offering honest reviews and practical advice tailored to today’s conscious consumers.