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5 Best Under Armour Base Layers of 2026

Last Updated - 2026/05/20

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Merino.tech

Merino Wool Mens Baselayer Set - Lite, Midweight, Heavyweight - Thermal Underwear for Men Top and Bottoms with Socks (Medium, 250 Charcoal Grey)

Merino.tech

CA$139.94

More Details
Main highlights
- Zero Worries: Every Wool Shirt and Long Johns Men Set we make is backed by our Merino.tech Promise - ensuring you're 100% happy with every Merino.tech purchase. For best results hand wash and lay flat to dry.
- Super Soft & Comfortable: 100% Superfine 17.5 Micron merino wool base layer set mens provides all day comfort and no itch. Designed for daily wear without rubbing, overheating, or bunching of regular cotton.
- Moisture Wicking & Odor Resistant: Natural wicking and odor-resistant properties of merino wool thermal underwear allow it to absorb moisture better than any other fabric, keeping you dry and fresh.
- Midweight: Mens Merino Wool Base Layer set Available in: Lightweight = 165 g/m², Midweight = 250 g/m², Heavyweight = 320 g/m². Free Merino Wool Hiking Socks ($21 Value!) - Package includes Merino wool Midweight base layer mens top and wool men long johns 250 g/m² + Merino Wool Hiking Socks. Designed in Canada.
- Breathable: For longer lasting wear, hand wash and lay flat to air dry. Mens wool long johns sets naturally regulate body temperature to keep you comfortable all year round.
CA$139.94
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Under Armour

Packaged Base 2.0 Crew

Under Armour

CA$90.00

More Details
Main highlights
- UA Base 2.0 Active Baselayer is lightweight, flexible & breathable for high activity in cool conditions|UA Scent Control Technology to keep you undetected in all pursuits|Soft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortable|Material wicks sweat & dries really fast|4-way stretch construction moves better in every direction
CA$90.00
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Under Armour

Under Armour Men's Packaged Base 2.0 Leggings, (001) Black / / White, Medium

Under Armour

CA$70.00

More Details
Main highlights
- UA Base 2.0 Active Baselayer is lightweight, flexible & breathable for high activity in cool conditions
- Soft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortable
- Performance elastic waistband, Working fly, Pockets: No
- Material wicks sweat & dries really fast, 4-way stretch material moves better in every direction
- Inseam: 30.5""
CA$70.00
4
Best Value
10% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Under Armour
10% Off

Under Armour Men's Tac ColdGear Infrared Base Leggings , Black (001)/Black, Medium

Under Armour

CA$70.00

CA$77.93
(10% Off)

More Details
Main highlights
- Where we started? It all started with an idea to build a superior T-shirt
- Where we started? It all started with an idea to build a superior T-shirt
- Under Armour’s mission is to make all athletes better through passion, design and the relentless pursuit of innovation
- Under Armour’s mission is to make all athletes better through passion, design and the relentless pursuit of innovation
- The technology behind Under Armour's diverse product assortment for men, women and youth is complex, but the program for reaping the benefits is simple: wear HeatGear when it's hot, ColdGear when it's cold, and AllSeasonGear between the extremes.
CA$70.00
CA$77.93 (10% Off)
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Under Armour

UA CG Armour Fitted Mock

Under Armour

CA$65.00

CA$71.45
(9% Off)

More Details
Main highlights
- Stretch-mesh back & underarm panels provide strategic ventilation without sacrificing warmth
- Material wicks sweat & dries really fast
- Ergonomic design keeps seams off of high abrasion areas
- Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior
- 4-way stretch construction moves better in every direction
CA$65.00
CA$71.45 (9% Off)

5 Best Under Armour Base Layers of 2026

Merino Wool Mens Baselayer Set - Lite, Midweight, Heavyweight - Thermal Underwear for Men Top and Bottoms with Socks (Medium, 250 Charcoal Grey)

Packaged Base 2.0 Crew

Under Armour Men's Packaged Base 2.0 Leggings, (001) Black / / White, Medium

Under Armour Men's Tac ColdGear Infrared Base Leggings , Black (001)/Black, Medium

UA CG Armour Fitted Mock

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