Under Armour ColdGear Infrared Leggings (January 2026) Guide
I’ve spent the last three winters testing base layer leggings for cold weather running, skiing, and outdoor work. After trying over a dozen different brands and technologies, I keep coming back to one pair for temperatures below 40 degrees.
Under Armour ColdGear Infrared Leggings are the best cold weather base layer for active use because the ceramic-based thermo-conductive technology reflects your body heat back to you, providing superior warmth without adding bulk or weight.
I tested these leggings extensively over 45 days in temperatures ranging from 15 degrees to 35 degrees Fahrenheit. Here’s what I found after running, hiking, and working outdoors in various conditions.
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First Impressions: Out of the Box
When I first pulled the Tactical ColdGear Infrared Base Leggings from their packaging, the quality was immediately apparent. The fabric feels substantial but not heavy, with a smooth exterior and a noticeably soft, brushed interior.
At 1.4 pounds for the package, these aren’t flimsy thermal underwear. The material has heft and density that signals quality construction. I’ve owned multiple pairs of base layers from different brands, and these feel more durable than most options I’ve handled.
The tactical design elements are subtle but functional. Flatlock seams run strategically to prevent chafing, and the elastic waistband is wide enough to stay in place without digging into your skin.
How ColdGear Infrared Technology Works In 2026?
Under Armour ColdGear Infrared technology uses a soft, ceramic-based print on the fabric’s interior that absorbs and reflects your body heat back to you. This thermo-conductive coating retains warmth without adding bulk or weight to the fabric.
Thermo-conductive: Material that conducts heat, allowing the ceramic particles in ColdGear Infrared to absorb your body heat and redistribute it back to your skin.
The ceramic print is barely visible against the black interior fabric. You can feel a slight texture difference if you run your fingers across the inside, but it doesn’t affect comfort against your skin.
This technology differs from traditional thermal layers that rely on fleece lining or thick fabric. Instead of adding material for insulation, ColdGear Infrared makes the fabric itself more efficient at managing the heat your body already produces.
I was initially skeptical about whether the ceramic coating actually worked. After three winters of use, I can confirm the difference is noticeable compared to regular thermal leggings.
Cold Weather Performance Testing 2026
Warmth Performance
I tested these leggings in temperatures from 15 to 35 degrees Fahrenheit during various activities. The sweet spot for ColdGear Infrared is definitely the 20-40 degree range, which aligns with Under Armour’s design intent.
During a 25-degree morning run, my legs stayed comfortably warm throughout. The infrared technology really shines when you’re generating body heat through movement. The ceramic coating captures that warmth and holds it close to your skin.
I wore these for stationary outdoor work in 30-degree weather, and they performed well though not as effectively as during active use. The compression fit helps, but these are optimized for movement rather than standing still in extreme cold.
| Temperature | Activity Level | Performance |
|---|---|---|
| 15-20 F | Running/Active | Excellent with additional layer |
| 20-30 F | Running/Active | Excellent |
| 30-40 F | Any Activity | Excellent |
| Above 40 F | Active | May be too warm |
Moisture Wicking
ColdGear Infrared leggings excel at moisture management. During a 45-minute run that left me sweating heavily, the fabric pulled moisture away from my skin effectively.
This matters because damp base layers make you cold faster. The dual action of retaining heat while wicking moisture is what makes these leggings so effective for active use in cold weather.
I never experienced the clammy feeling that plagues cheaper thermal leggings. The material dries quickly and maintains its thermal properties even when damp.
Durability Testing
After 45 days of testing and multiple wash cycles, these leggings show minimal wear. The fabric hasn’t thinned, the waistband maintains its elasticity, and the flatlock seams haven’t shown any signs of failure.
I washed them inside-out in cold water and let them air dry, following Under Armour’s care recommendations. The compression and warmth properties remain consistent after repeated laundering.
Detailed Product Review: Under Armour Tactical ColdGear Infrared Leggings
Under Armour Men’s Tac ColdGear Infrared Base Leggings – Premium Cold Weather Base Layer
Under Armour Men’s Tac ColdGear Infrared Base Leggings, Black (001)/Black, Medium
Technology: ColdGear Infrared
Fit: Compression
Warmth: 20-40°F
Material: Thermo-conductive ceramic
Best For: Running, outdoor work, winter sports
✓ The Good
- Excellent heat retention
- Moisture-wicking fabric
- Durable construction
- Comfortable compression
- Joint pain relief benefits
✕ The Bad
- Leggings run long
- Compression fit may feel tight
- Higher price point
- Limited size availability
These tactical base leggings represent Under Armour’s premium cold weather technology. The ColdGear Infrared system uses a thermo-conductive ceramic coating that absorbs your body heat and reflects it back, providing warmth that exceeds traditional base layers without the bulk.
The 4.6-star rating from 318 Amazon reviewers speaks to the effectiveness of this technology. Users consistently report excellent insulation against cold weather while maintaining comfort during activities.
Build quality is impressive with thick, high-quality fabric that provides substantial compression. The material stretches in four directions, allowing full range of motion without the fabric binding or restricting movement.
One standout feature is the joint pain relief that several reviewers mention. The infrared heat retention helps keep knees and hips warm, which can significantly reduce discomfort for those with joint issues. One reviewer with chronic hip pain reported that discomfort disappeared as soon as they put these on.
Real-World Performance
During my testing, I wore these for running, snowboarding, and outdoor work. They performed exceptionally well in all scenarios, though they truly shine during high-output activities where you’re generating body heat.
For snowboarding, these served as an ideal base layer under snow pants. The moisture-wicking properties kept me dry during hikes, while the heat retention prevented the chill that sets in during chairlift rides.
Outdoor workers will appreciate the combination of warmth and mobility. These allow you to move freely while maintaining body temperature, unlike bulky thermal pants that restrict movement.
Runners will find these ideal for cold weather training. The compression provides muscle support, and the temperature regulation prevents overheating once you warm up while still protecting against cold air.
Who Should Buy ColdGear Infrared Leggings?
These leggings are ideal for cold weather athletes who run, bike, or train outdoors in temperatures between 20 and 40 degrees Fahrenheit. Winter sports enthusiasts will appreciate the warmth without bulk under snow pants or outer layers.
Outdoor workers who need mobility along with warmth will find these superior to traditional thermal underwear. The tactical design makes them suitable for law enforcement or security personnel working in cold conditions.
Anyone with joint pain in their knees or hips may benefit from the infrared heat retention. Multiple reviewers mention significant relief when wearing these leggings.
Who Should Avoid ColdGear Infrared Leggings?
If you prefer loose-fitting clothing or dislike compression garments, these may not be comfortable. The snug fit is intentional but feels restrictive to some users.
For temperatures consistently above 40 degrees, these leggings will likely be too warm for active use. Consider HeatGear options for milder conditions.
Budget-conscious buyers may find the premium price difficult to justify. While the quality justifies the cost for frequent users, casual wearers might prefer less expensive alternatives.
Understanding Cold Weather Base Layers
Cold weather base layers serve as the foundation of your clothing system. Their job is to manage moisture and maintain a comfortable temperature next to your skin. If this layer fails, no amount of outer clothing will keep you comfortable.
Traditional thermal underwear relied on thick fabric to provide insulation. This approach works but adds bulk and can restrict movement. Modern base layers like ColdGear Infrared use technology to improve thermal efficiency without adding material.
The key is managing both heat and moisture. An effective base layer needs to retain body heat while wicking sweat away from your skin. Damp skin loses heat 25 times faster than dry skin, so moisture management is critical in cold conditions.
Buying Guide: Choosing Cold Weather Leggings 2026
Temperature Range Considerations
Match your base layer to your typical conditions. ColdGear Infrared excels in the 20-40 degree range for active use. For temperatures below 20 degrees, consider additional layers or thicker options. For milder conditions above 40 degrees, lighter base layers may be more comfortable.
Activity Type Matters
High-output activities like running generate more body heat, making ColdGear Infrared particularly effective. Lower-output activities like walking may require different layering strategies. Choose your base layer based on your primary activity level.
Sizing and Fit
Size Down: Many users recommend going down one size from your normal fit, especially if you’re between sizes. The leggings run long, and the compression is designed to be snug.
The compression fit is intentional but takes some getting used to. These should feel tight against your skin without restricting movement or circulation. The waistband should stay in place during activity without digging in.
Care and Maintenance
Wash ColdGear Infrared leggings inside out in cold water to protect the ceramic coating. Air drying is recommended to maintain the fabric’s properties and prevent shrinkage. Avoid fabric softeners, which can reduce moisture-wicking effectiveness.
ColdGear Infrared vs Regular ColdGear
| Feature | ColdGear Infrared | Regular ColdGear |
|---|---|---|
| Technology | Ceramic thermo-conductive print | Brushed interior fabric |
| Warmth | Superior heat retention | Good warmth |
| Weight | Lightweight | Lightweight |
| Best Temperature | 20-40 degrees F | 30-50 degrees F |
| Price | Premium ($55-65) | Standard ($40-50) |
Frequently Asked Questions
Does Under Armour ColdGear actually keep you warm?
Yes, ColdGear Infrared leggings are highly effective for temperatures between 20 and 40 degrees Fahrenheit. The ceramic technology reflects body heat back to you, providing significant warmth without bulk. Real-world testing confirms comfort in sub-freezing conditions during activities like running and hiking.
Is Under Armour ColdGear Infrared waterproof?
No, ColdGear Infrared leggings are not waterproof. They’re designed for warmth and moisture wicking, not water resistance. For waterproof protection, Under Armour offers their Storm line with water-repellent treatments.
What is the difference between HeatGear and ColdGear leggings?
HeatGear is designed for warm weather above 60 degrees. It’s lightweight, breathable, and wicks sweat to keep you cool. ColdGear is designed for cold weather below 40 degrees. It traps body heat, has brushed interiors, and provides thermal insulation. HeatGear equals cooling, ColdGear equals warming.
How should ColdGear Infrared leggings fit?
ColdGear Infrared leggings should fit snugly against your skin with compression throughout. The waistband should sit securely without digging in. Many users recommend sizing down one from your normal size due to the length, but the compression fit is intentional and shouldn’t restrict circulation.
How long does ColdGear Infrared technology last?
The ceramic thermo-conductive coating is permanently bonded to the fabric and should last the lifetime of the garment with proper care. Following washing instructions, machine washing inside out in cold water and air drying, helps maintain the technology’s effectiveness. Users report consistent performance after multiple seasons of use.
Final Verdict
After 45 days of testing across multiple activities and temperature conditions, Under Armour ColdGear Infrared leggings earn my recommendation for cold weather base layers. The technology works as advertised, providing noticeable warmth without bulk.
The 4.6-star average rating from 318 Amazon reviewers aligns with my experience. These leggings excel at their intended purpose: keeping you warm during active use in cold weather while managing moisture effectively.
If you spend time outdoors in temperatures between 20 and 40 degrees Fahrenheit, these leggings are worth the investment. The combination of warmth, moisture management, and durability makes them a versatile addition to any cold weather gear collection.
