10 Best base layers of 2025

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Best Choice

1

Merino.tech
Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom (Large, 250 Black)
Main highlights

Comfort and Temperature Regulation
Made from superfine 17.5 micron Merino wool, the base layer offers itch-free comfort and natural temperature regulation for all-day wear.

Versatile Outdoor Use
Ideal for hiking, skiing, and everyday wear, adapting to different weather conditions with ease.

Moisture Wicking Performance
Customers praise its ability to wick away sweat, keeping you dry and comfortable during intense activities.
Key specs
- Fit:Superfine 17.5 Micron
- Insulation:Midweight 250 g/m²
- Breathability:Regulates body temperature
- Material:Merino wool
- Moisture Wicking:Yes, natural wicking
9.8

Exceptional

Our Rating

9.9
Warmth

9.9
Comfort

9.7
sweat control
How do we rank?

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Based on millions of stores and reviews

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Analyzing top stores
Value for Money

2

Carhartt
Carhartt Men's MBL115 Base Force® Midweight Base Layer Classic Bottom - Medium - Black
Main highlights

Heat Retention and Comfort
Waffle knit traps heat, fast dry wicks sweat, and fights odor for all-day comfort.

Ideal for Active Use
Rugged flex technology and strategic seam placement enhance movement, making it perfect for active jobs.

Durability and Low Profile
Praised for durability over two winters and its low-profile design.
Key specs
- Fit:Concealed dry waistband
- Comfort:Flatlock seams, tagless label
- Stretch:Rugged flex technology
- Material:Waffle knit
- Heat Retention:Traps heat
9.7

Exceptional

Our Rating

9.3
Comfort

9.1
lasts a long time

8.0
Warmth
3

Thermajohn
Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Large, Black)

25% Off
Main highlights

Heat Retention and Comfort
Designed with ultra-soft fleece and breathable fabric for warmth and comfort.

Perfect for Cold Weather Activities
Ideal for skiing, winter travel, or as a cozy pajama layer.

Customer Praise for Softness
Praised for its soft texture and comfort in customer reviews.
9.6

Exceptional

Our Rating

9.9
Warmth

9.7
Comfort

9.3
sweat control
4

Cuddl Duds

Cuddl Duds Thermal Underwear for Women - Women's Cold Weather Clothes Fleece Lined Thermal Long Johns Set - Winter Base Layer Clothing Thermal Shirt Top and Leggings Pants 2Pc Set for Women - Black M
9.5

Excellent

Our Rating
5

Dalavch

Dalavch 5 Pack Men’s Compression Shirts Short Sleeve Cool Dry Sports Athletic Workout Base Layer Undershirt T-Shirt Tops 5 Black Large
9.2

Excellent

Our Rating
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6

Under Armour
Under Armour Men's HeatGear Armour Leggings , Black (001)/Pitch Gray, Large
Main highlights

Lightweight Fabric and Quick Drying
Super-light HeatGear fabric offers superior coverage without weighing you down, with fast sweat-wicking and drying properties.

Ideal for Cool Weather Activities
Perfect for running, cycling, and training in cool temperatures, providing warmth without bulk.

Praised for Durability and Fit
Customers appreciate the ergonomic design and durability, withstanding frequent use and washing.
9.0

Excellent

Our Rating

9.5
Comfort

8.7
Comfortable

8.0
lasts a long time
7

CL convallaria

Long Johns for Men, Thermal Underwear Set Winter Hunting Gear Sport Base Layer Top and Bottom Midweight Black XL

17% Off
8.9

Very Good

Our Rating
8

WEERTI
WEERTI Thermal Underwear for Men Long Johns with Fleece Lined, Base Layer Men Cold Weather Top Bottom Black

33% Off
Main highlights

Comfortable All-Day Wear
Long johns fit snugly, minimizing heat loss while providing warmth and security.

Ideal for Cold Weather Use
Perfect under formal or casual attire, or as pajamas.

Praised for Comfort and Fit
Super comfy, soft, stretchy with a fleece-lined interior.
Key specs
- Fit:Snug like second skin
- Comfort:All-day comfortable
- Stretch:4-way stretch
- Material:Moisture wicking fabric
- Heat Retention:Minimizing heat loss
8.8

Very Good

Our Rating

9.9
Comfort

9.5
lengthen

9.3
sweat control
9

WEERTI
WEERTI Thermal Underwear for Women Long Johns with Fleece Lined, Base Layer Women Cold Weather Top Bottom Black

35% Off
Main highlights

All Day Comfort
Long johns for women fit snug like a second skin, minimizing heat loss, lightweight but warm, offering a streamlined look.

Perfect for Cold Weather Activities
Ideal for hiking, skiing, or daily wear in cold climates, providing warmth, moisture-wicking, and flexibility without sacrificing comfort.

Super Soft and Comfortable
Customers consistently praise the softness and comfort of the fabric, noting its effectiveness in keeping them warm without overheating.
Key specs
- Fit:Snug fit
- Design:Perfect design for women
- Comfort:All-day comfortable wearing
- Stretch:Four-Way stretch
- Heat Retention:Minimizing heat loss
8.6

Very Good

Our Rating

9.9
Warmth

9.7
Comfort

9.5
sweat control
10

ALPIDEX
ALPIDEX Functional Wear Thermal Underwear Men Ski Breathable Quick Drying Clothing Warm Base Layer Mens Cold Weather Set Long Johns Top Bottom, Size:S/M, Colour:Black-Grey
Main highlights

Warmth and Versatility
The thermal underwear set offers warmth for winter sports, dog walking, and more.

Ideal for Cold Weather Activities
Perfect for winter sports, outdoor events, and daily wear.

Comfort and Movement Freedom
Customers love the comfort and flexibility provided by the flat seams.
Key specs
- Fit:Available in sizes S/M L/XL 2XL/3XL
- Comfort:Extra flat seams
- Stretch:8 elastane
- Material:70 polyamide, 22 polyester
- Heat Retention:Keeps warm during winter
8.5

Good

Our Rating

10 Best base layers of 2025

1

Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom (Large, 250 Black)

9.9

9.9

9.7

How do we rank?

How do we rank?

Analyzing top stores

2

Carhartt Men's MBL115 Base Force® Midweight Base Layer Classic Bottom - Medium - Black

9.3

9.1

8.0

3

Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Large, Black)

9.9

9.7

9.3

4

Cuddl Duds Thermal Underwear for Women - Women's Cold Weather Clothes Fleece Lined Thermal Long Johns Set - Winter Base Layer Clothing Thermal Shirt Top and Leggings Pants 2Pc Set for Women - Black M

5

Dalavch 5 Pack Men’s Compression Shirts Short Sleeve Cool Dry Sports Athletic Workout Base Layer Undershirt T-Shirt Tops 5 Black Large

6

Under Armour Men's HeatGear Armour Leggings , Black (001)/Pitch Gray, Large

9.5

8.7

8.0

7

Long Johns for Men, Thermal Underwear Set Winter Hunting Gear Sport Base Layer Top and Bottom Midweight Black XL

8

WEERTI Thermal Underwear for Men Long Johns with Fleece Lined, Base Layer Men Cold Weather Top Bottom Black

9.9

9.5

9.3

9

WEERTI Thermal Underwear for Women Long Johns with Fleece Lined, Base Layer Women Cold Weather Top Bottom Black

9.9

9.7

9.5

10

ALPIDEX Functional Wear Thermal Underwear Men Ski Breathable Quick Drying Clothing Warm Base Layer Mens Cold Weather Set Long Johns Top Bottom, Size:S/M, Colour:Black-Grey

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