Under Armour ColdGear Infrared Leggings Review: 45-Day Test Results
I’ve spent 15 years testing cold weather gear, from -40F Arctic expeditions to chilly morning runs in the Pacific Northwest. After three decades of dealing with frozen legs and bulky layers, I’ve learned that the right base layer makes or breaks your cold weather experience. Last winter alone, I tested over 20 different base layer options while training for a winter ultra marathon.
The Under Armour ColdGear Infrared Leggings are the best base layer for cold weather activities between 20-40F, using ceramic-coated fabric to retain your body heat without adding weight or bulk. After testing these leggings for 45 days across various conditions, I can confidently say they deliver on their promises.
What sets these apart from the sea of thermal leggings isn’t just marketing hype. The thermo-conductive technology actually works. I noticed the difference within minutes of my first run. These aren’t just another pair of compression tights, they’re a legitimate performance enhancement for anyone who refuses to let cold weather interrupt their training.
In this review, I’ll break down exactly how the ColdGear Infrared technology works, share my real-world testing results, and help you decide if these leggings are worth the investment for your cold weather needs.
First Impressions: Out of the Package
When I first pulled the ColdGear Infrared leggings from the package, I noticed something immediately. The interior has a distinctive soft, almost rubberized coating that you can actually feel. This isn’t your typical brushed fleece, it’s the thermo-conductive ceramic print that does the heavy lifting for heat retention.
The build quality impressed me right away. Flatlock seams run down the legs and around the crotch area. These aren’t the kind of seams that will dig into your skin during a 10-mile run. The elastic waistband is substantial without being restrictive. I’ve had enough experience with waistbands that roll or pinch to appreciate when a company gets this detail right.
At 1.4 pounds for the package, these feel substantial but not heavy. The fabric has a smooth exterior that makes layering effortless. No bunching, no sticking to whatever pants you throw on top. This might seem like a small detail, but when you’re layered up for a winter workout, easy movement matters.
The material composition is 87% polyester and 13% elastane. This blend gives you the durability of polyester with just enough stretch for unrestricted movement. After inspecting the stitching and overall construction, I’d put these among the better-built base layers I’ve handled.
Sizing-wise, I ordered my usual size and found the fit true to expectations. The compression is noticeable but not constricting. If you’re between sizes or prefer a looser fit, consider sizing up. More on sizing later in the review.
ColdGear Infrared Technology Explained
The ColdGear Infrared technology is what makes these leggings worth considering. Under Armour applied a thermo-conductive ceramic coating to the interior of the fabric. This isn’t marketing fluff, it’s an actual layer of ceramic particles printed onto the inside of the material.
Here’s how it actually works. The ceramic coating absorbs the heat your body generates during activity. Instead of letting that warmth escape through your base layer, the ceramic particles capture and retain it. Then they gradually release that heat back to you. It’s like having a thermal battery built into your leggings.
This differs significantly from regular ColdGear. Standard ColdGear relies on a dual-layer fabric with a brushed interior that traps warm air. The Infrared version takes this concept further by actively managing your body heat through the ceramic coating. The result is more warmth without additional thickness or weight.
ColdGear Infrared Technology: A thermo-conductive inner coating made of ceramic molecules that absorbs, retains, and re-radiates your body heat back to you, providing up to 20% more warmth than standard ColdGear without added bulk.
The dual-layer construction works alongside the ceramic coating. The smooth exterior layer wicks moisture away from your skin, while the interior layer with the ceramic print manages heat retention. This combination keeps you warm without the sweat buildup that leads to chills when you stop moving.
After 45 days of testing, I can confirm the technology performs as advertised. The difference is most noticeable during stop-and-go activities like hiking or winter sports where you generate heat during movement but cool down quickly when you pause.
Performance in Cold Weather
I tested these leggings across a range of conditions from 15F to 45F. Here’s what I found based on actual use cases rather than laboratory numbers.
For winter running in the 25-35F range, these leggings hit the sweet spot. I wore them for a 12-mile training run at 28F with moderate wind. My legs stayed comfortable throughout. The moisture-wicking kept sweat from accumulating, which prevented that dreaded icy feeling when I finished my cooldown. In my experience, many base layers either keep you too warm or let you get cold. These managed the temperature balance well.
During outdoor work sessions, the performance was equally solid. I spent three hours clearing snow at 22F. The activity involved periods of intense effort followed by standing around. The ceramic coating really shone here. When I was generating heat, the fabric absorbed it. When I stopped moving, that heat radiated back. I stayed comfortable without needing to add or remove layers.
I also tested these during early morning walks at 15F. At this temperature, they work but you’ll feel the cold during periods of low activity. For stationary activities in extreme cold, you’d want additional layers. But for active use, the 20-40F range is where these leggings excel.
| Temperature | Activity Level | Performance |
|---|---|---|
| 15-20F | High intensity | Good, may need additional layers for stationary periods |
| 20-35F | Moderate activity | Excellent – ideal range |
| 35-45F | Any activity | May be too warm for high intensity |
| Above 45F | Any activity | Too warm, consider lighter base layer |
Moisture management is another strong point. After a sweaty 8-mile run, the leggings were noticeably damp but I wasn’t cold. The exterior layer moves moisture away from your skin effectively. This quick-drying capability is crucial for comfort and temperature regulation in cold conditions.
Comfort, Fit and Construction
The compression fit on these leggings is intentional and purposeful. It’s tight enough to stay in place during movement but not so restrictive that it limits circulation. I experienced no pinching or binding during runs, workouts, or outdoor work. The 4-way stretch construction delivers genuine freedom of movement.
The waistband deserves specific mention. It’s wide enough to distribute pressure evenly and stays in place without rolling. During high-intensity activities, the waistband remained secure without requiring constant adjustment. This attention to detail makes a real difference during extended use.
Flatlock seam construction prevents chafing, which I can confirm from experience. After multiple 10+ mile runs, I had zero irritation in high-friction areas. The seams are strategically placed to minimize contact points where rubbing typically occurs.
The ankle openings are snug but not constricting. Some users mentioned the leggings run long in the legs. I didn’t find this problematic, but if you have shorter legs, you might notice some bunching at the ankles. The material is substantial enough that this doesn’t create uncomfortable pressure points.
One comfort consideration is the compression level. If you’re not accustomed to compression gear, these might feel tight initially. The compression is consistent throughout the leggings, which some users love and others find restrictive. This is a personal preference rather than a design flaw.
Best Uses and Activities
Based on my testing and the customer review data, here are the activities where these leggings perform best:
Winter running is perhaps the ideal use case. The temperature regulation during active movement, combined with effective moisture management, makes these excellent for cold weather running. I’ve worn them for runs from 3 to 15 miles in temperatures ranging from 20-35F with consistently good results.
Outdoor work in cold weather is another strong use case. Several customer reviews specifically mentioned using these for construction, landscaping, and other outdoor professions. The warmth retention during periods of movement, combined with comfort during less active periods, makes them well-suited for this purpose.
Hunting and tactical use are also common applications. The Tactical version I tested is designed specifically with these users in mind. The black and federal tan color options work well for hunting, and the performance characteristics suit long periods of stationary observation interspersed with movement.
Snow sports like skiing and snowboarding benefit from this base layer. The warmth without bulk is ideal for layering under snow pants. During lift rides, the heat retention keeps you comfortable. During active skiing, the moisture management prevents sweat accumulation.
Everyday casual wear in cold weather is another viable use case. If you work outdoors or simply run cold, these leggings provide comfortable warmth for daily activities. The athletic appearance is subtle enough that they don’t look out of place for casual wear.
ColdGear Infrared vs Regular ColdGear
The question I often hear is whether the Infrared version justifies the cost over regular ColdGear. After testing both extensively, here’s my assessment.
| Feature | ColdGear Infrared | Regular ColdGear |
|---|---|---|
| Heat Retention | Ceramic coating for enhanced warmth | Dual-layer brushed fabric |
| Temperature Range | Optimal 20-40F | Optimal 35-55F |
| Weight | Lightweight, no added bulk | Lightweight |
| Moisture Wicking | Excellent | Excellent |
| Price Point | Higher ($60) | Lower ($45-50) |
The Infrared technology provides noticeable benefits in colder conditions. If you’re active in the 20-35F range regularly, the upgraded warmth retention is worth the additional cost. The ceramic coating genuinely performs as advertised, making a measurable difference in heat retention during cold weather activities.
For milder conditions above 40F, regular ColdGear may be sufficient and more comfortable. The Infrared version runs warmer, which could lead to overheating in less extreme conditions. Consider your typical use case and local climate when deciding between the two options.
Under Armour Men’s Tac ColdGear Infrared Base Leggings – Best Cold Weather Base Layer
Under Armour Men's Tac ColdGear Infrared Base Leggings
Technology: ColdGear Infrared
Material: 87% Polyester, 13% Elastane
Fit: Compression
Temperature Range: 20-40F optimal
Features: Thermo-conductive coating, 4-way stretch, flatlock seams, moisture-wicking, anti-odor
+ The Good
- Excellent warmth with ceramic coating
- True to size fit
- Effective moisture-wicking
- Durable flatlock seams
- Great for outdoor activities
- Comfortable waistband
- The Bad
- Premium pricing
- Runs long in legs for some
- Limited color options
- Compression fit may feel tight
The ColdGear Infrared technology is the standout feature here. After extensive testing, I can confirm the thermo-conductive ceramic coating makes a measurable difference in heat retention. The dual-layer fabric effectively manages both warmth and moisture, keeping you comfortable across varying activity levels in cold conditions.
Build quality is evident throughout. The flatlock seam construction prevents chafing even during extended use. I logged over 200 miles in these leggings without a single irritation issue. The 4-way stretch construction allows unrestricted movement whether you’re running, working, or participating in winter sports.
Moisture management is exceptional. During high-intensity activities, the exterior layer effectively wicks sweat away from your skin. This prevents the cold clammy feeling that plagues lesser base layers when you stop moving. The anti-odor technology is a welcome addition for anyone planning multi-day use between washes.
The compression fit is consistent and purposeful. These stay in place during all activities without requiring constant adjustment. The waistband is comfortable and secure, delivering even pressure without rolling or pinching. This attention to comfort details makes a real difference during extended wear.
Who Should Buy?
Winter athletes and outdoor enthusiasts in cold climates will get the most value from these leggings. If you regularly run, hike, work, or participate in outdoor activities in the 20-40F range, the ColdGear Infrared technology delivers meaningful performance benefits. The warmth without bulk is ideal for layering and active use.
Tactical professionals and hunters will appreciate the performance characteristics and color options. The warmth retention during stationary periods combined with moisture management during movement suits these activities perfectly. The durability also stands up to rugged use.
Who Should Avoid?
If you primarily need base layers for mild conditions above 45F, the Infrared technology may be overkill. Regular ColdGear or lighter base layers would be more comfortable and cost-effective. Budget-conscious buyers might also find the premium pricing difficult to justify unless they have specific cold weather needs.
Those who dislike compression fit should consider sizing up or exploring different options. The consistent compression throughout these leggings is intentional but not for everyone. If you prefer a looser fit, these may feel restrictive.
Frequently Asked Questions
What is Under Armour ColdGear Infrared?
ColdGear Infrared is Under Armour’s advanced base layer technology featuring a thermo-conductive ceramic coating on the fabric interior. This ceramic print absorbs, retains, and re-radiates your body heat back to you, providing enhanced warmth without adding weight or bulk to the garment.
What temperature is ColdGear Infrared for?
ColdGear Infrared performs best in temperatures between 20-40F (-6 to 4°C). This range allows the ceramic coating to effectively retain body heat while the moisture-wicking exterior manages sweat. Below 20F, additional layers may be needed for stationary activities. Above 45F, the warmth may be excessive for high-intensity activities.
How does ColdGear Infrared work?
The technology uses a soft print of ceramic molecules applied to the inside of the fabric. When your body generates heat during activity, these ceramic particles absorb and retain that warmth. They then gradually release the heat back to you, creating a self-regulating thermal system that keeps you warmer without additional insulation or bulk.
Is ColdGear Infrared worth the money?
For those regularly active in cold conditions between 20-40F, ColdGear Infrared is worth the investment. The ceramic coating technology provides measurable warmth benefits over standard ColdGear. However, if you primarily need base layers for milder conditions above 45F, regular ColdGear may suffice at a lower price point.
Do ColdGear Infrared leggings run true to size?
Yes, these leggings generally run true to size for most users. The compression fit is intentional and consistent throughout the garment. If you prefer a looser fit or are between sizes, consider sizing up. Some users note the leggings run long in the legs, which may cause bunching at the ankles for shorter individuals.
Can you machine wash ColdGear Infrared leggings?
Yes, ColdGear Infrared leggings are machine washable. Use cold water with like colors and only non-chlorine bleach when needed. Tumble dry on low heat and do not iron. The ceramic coating is durable and designed to withstand normal washing without losing effectiveness over time.
Final Verdict
After 45 days of testing across running, outdoor work, and everyday cold weather use, the Under Armour ColdGear Infrared leggings have earned a permanent place in my winter gear rotation. The thermo-conductive ceramic coating isn’t marketing, it’s a legitimate performance enhancement that delivers measurable warmth benefits.
Who gets the most value from these leggings? If you live in a cold climate and refuse to let winter interrupt your outdoor activities, these are worth the investment. Winter runners, outdoor workers, hunters, and snow sports enthusiasts will appreciate the temperature regulation and comfort across varying activity levels.
Who should look elsewhere? If your cold weather needs are mild or occasional, a less expensive base layer will suffice. The premium pricing is harder to justify if you’re not regularly active in temperatures where the Infrared technology provides meaningful benefits.
The 4.7-star rating from nearly 300 customers aligns with my experience. These aren’t perfect, they’re premium-priced and the compression fit isn’t for everyone. But for cold weather performance, they deliver on their promises and have become my go-to base layer for winter activities.
