Top Men's Active Base Layers Collection

The best Men's Base Layers includes Under Armour ColdGear Fitted Mock (Men's), Thermajohn Men's Long Sleeve Thermal Shirt, Merino.tech Organic Merino Wool T-Shirt and many others as mentioned below.

1

Under Armour ColdGear Fitted Mock (Men's)

  • Ultra-warm brushed interior for maximum comfort.
  • Smooth exterior dries quickly and efficiently.
  • Stretch-mesh panels enhance ventilation and breathability.
  • 4-way stretch construction allows unrestricted movement.
  • Material wicks sweat for quick evaporation.
  • Designed to keep you warm in cold conditions.
  • Perfect base layer for any outdoor activity.
  • Average Rating out of 5:
  • Price Range: $40.00
  • Color: Black (001)/White
2

Thermajohn Men's Long Sleeve Thermal Shirt

  • Designed for maximum warmth in cold weather.
  • Ultra-soft fleece lining for all-day comfort.
  • Moisture-wicking fabric keeps you dry and fresh.
  • Four-way stretch for unrestricted movement.
  • Perfect for layering under winter clothing.
  • Ideal as thermal pajamas for cozy nights.
  • Durable quality material for long-lasting wear.
  • Average Rating out of 5:
  • Price Range: $18.99
  • Color: Black
  • Material: 217 positive
3

Merino.tech Organic Merino Wool T-Shirt

  • 100% Organic Merino Wool for ultimate comfort.
  • Lightweight design at 165 g/m² for breathability.
  • Moisture-wicking properties keep you dry all day.
  • Odor resistant for fresh wear anytime, anywhere.
  • Superfine 17.5 Micron wool prevents itching.
  • Easy care: machine washable for convenience.
  • Backed by Merino.tech Promise for satisfaction.
  • Average Rating out of 5:
  • Price Range: $42.99
  • Size: Small,Medium,Large,X-Large,XX-Large,3X-Large
  • Color: .Charcoal
4

32 Degrees Men's Thermal Baselayer Crew Top

  • Lightweight thermal baselayer for ultimate comfort.
  • Form-fitting design enhances mobility and warmth.
  • 4-way stretch fabric for unrestricted movement.
  • Moisture-wicking technology keeps you dry.
  • Anti-odor properties ensure lasting freshness.
  • Tag-free label prevents irritation during wear.
  • Easy care instructions for hassle-free maintenance.
  • Average Rating out of 5:
  • Price Range: $14.99
  • Color: Black
  • Material: 11 positive
5

A4 Men's Cooling Crew Tee (Short Sleeve)

  • Ultra-lightweight 4.0 oz micro poly fabric
  • Designed for peak performance and comfort
  • Ultra-tight knit for enhanced opacity
  • Stain release technology for easy cleaning
  • Fade-resistant for long-lasting color vibrancy
  • Snag-resistant for durable everyday wear
  • Short sleeve design for optimal breathability
  • Average Rating out of 5:
  • Price Range: $7.99
  • Size: X-Small,Small,Medium,Medium-Medium,Large,Large-Large,X-Large,X-Large-X-Large,XX-Large,3X-Large,3X-Large-3X-Large,4X-Large
  • Color: Cardinal
6

Merino.tech 100% Merino Wool Thermal Shirt

  • 100% Merino wool for ultimate comfort.
  • Available in lightweight, midweight, and heavyweight options.
  • Moisture-wicking properties keep you dry.
  • Odor resistant for all-day freshness.
  • Includes premium Merino wool hiking socks.
  • Easy care: machine washable and air dry.
  • Backed by Merino.tech satisfaction guarantee.
  • Average Rating out of 5:
  • Price Range: $58.99
  • Size: Small,Medium,Large,X-Large,XX-Large,3X-Large
  • Color: .250 Charcoal Gray
7

Merino.tech Men's Merino Wool Base Layer Set

  • Superfine 17.5 Micron merino wool for comfort.
  • Available in lightweight, midweight, and heavyweight options.
  • Includes free Merino Wool Hiking Socks.
  • Moisture-wicking and odor-resistant properties.
  • Designed for daily wear without irritation.
  • Breathable fabric maintains body temperature year-round.
  • Backed by the Merino.tech Promise for satisfaction.
  • Average Rating out of 5:
  • Price Range: $99.99
  • Size: Small,Medium,Large,X-Large,XX-Large,3X-Large
  • Color: .250 Black Set
8

Under Armour ColdGear Compression Mock

  • Ultra-warm, brushed interior for superior comfort.
  • Smooth, fast-drying exterior for quick moisture management.
  • Strategic ventilation with stretch-mesh back and underarm.
  • 4-way stretch construction enhances mobility in all directions.
  • Material effectively wicks sweat for dryness.
  • Designed to keep you warm without bulk.
  • Ideal for cold weather training and activities.
  • Average Rating out of 5:
  • Price Range: $39.41
  • Color: Black (001)/White
9

Merino.tech Men's Organic Merino Wool T-Shirt

  • 100% Organic Merino wool for ultimate comfort.
  • Includes free Merino wool hiking socks, $21 value.
  • Moisture-wicking properties keep you dry and fresh.
  • Superfine 17.5 Micron wool prevents itching.
  • Lightweight design, perfect for everyday wear.
  • Easy care: washer safe and hand wash recommended.
  • Backed by Merino.tech Promise for customer satisfaction.
  • Average Rating out of 5:
  • Price Range: $44.99
  • Size: Small,Medium,Large,X-Large,XX-Large,3X-Large
  • Color: .Black Ink
10

Access Men's Heavyweight Thermal Shirt

  • Durable waffle knit fabric for long-lasting wear.
  • Ribbed collar traps body heat effectively.
  • Slim fit sleeves prevent bunching during movement.
  • Shrink-resistant fabric maintains shape after washing.
  • Versatile for outdoor activities or lounging at home.
  • Comfortable fit with a balance of structure and flexibility.
  • Ideal for cold weather layering and insulation.
  • Average Rating out of 5:
  • Price Range: $19.99
  • Color: White
11

MAGCOMSEN Men's Fleece Lined Thermal Shirt

  • Fleece lined for ultimate warmth and comfort.
  • Moisture-wicking fabric keeps you dry all day.
  • Four-way stretch for unrestricted movement and flexibility.
  • Perfect as a base layer or standalone shirt.
  • Great for various outdoor activities and sports.
  • Durable fabric suitable for everyday wear.
  • Ideal for cozy winter nights at home.
  • Average Rating out of 5:
  • Price Range: $24.98
  • Color: White
  • Material: 6 positive
12

LEICHR Men's Compression Long Sleeve Shirt

  • Tight-fitting long sleeve for maximum support.
  • Ultra-soft, quick-drying fabric for comfort.
  • Stylish crew neck design enhances flexibility.
  • Perfect for various sports and gym activities.
  • Ergonomic seams follow natural body lines.
  • Available in different sizes for optimal fit.
  • Great gift for active men in your life.
  • Average Rating out of 5:
  • Price Range: $11.69
  • Size: Small,Medium,Large,X-Large,XX-Large
  • Color: 1 Pcs# Purple-a
  • Material: 4 positive
13

Merino Protect Men's Odor-Resistant Wool T-Shirt

  • 100% natural Merino wool from ethical farms.
  • Odor-resistant, moisture-wicking for fresh wear.
  • Lightweight and versatile for various activities.
  • Temperature-regulating for comfort in all conditions.
  • Soft, durable fabric ideal for everyday use.
  • Slim fit design accentuates your physique.
  • Machine washable; easy care and maintenance.
  • Average Rating out of 5:
  • Price Range: $39.99
  • Color: 170 Light Grey Heather
14

Carhartt Men's Midweight Base Force Crew

  • Built with Force technology for ultimate comfort.
  • FastDry technology wicks sweat and dries quickly.
  • Odor-fighting properties keep you fresh all day.
  • Flatlock seams reduce chafing and enhance movement.
  • Concealed thumb loops for added hand warmth.
  • Convenient locker loops for easy hanging.
  • Tagless labels for irritation-free wear.
  • Average Rating out of 5:
  • Price Range: $33.59
  • Color: Black
  • Material: 13 positive
15

32 Degrees Men's 2-Pack Thermal Tops

  • Lightweight and comfortable for everyday wear.
  • Moisture-wicking fabric keeps you dry.
  • Anti-static and anti-odor technology.
  • Four-way stretch for enhanced mobility.
  • Fitted design for layering under clothing.
  • Easy care: machine wash and tumble dry.
  • Available in multiple sizes for perfect fit.
  • Average Rating out of 5:
  • Price Range: $23.99
  • Color: Black/Black
16

32 Degrees Men's Lightweight Thermal Crew Top

  • Lightweight thermal crew top for ultimate comfort.
  • Form-fitting design ideal for layering under clothes.
  • 4-way stretch fabric for excellent mobility.
  • Warm acrylic blend keeps you cozy in cold.
  • Easy care: machine wash, tumble dry low.
  • Available in multiple sizes for perfect fit.
  • 28.5" body length for a stylish look.
  • Average Rating out of 5:
  • Price Range: $14.99
  • Color: Black
  • Material: 12 positive
17

Merino.tech Men's 100% Merino Wool Base Layer

  • 100% Merino wool for ultimate comfort.
  • Moisture-wicking to keep you dry.
  • Odor-resistant for fresh all-day wear.
  • Perfect for layering or standalone use.
  • Slim fit design for a modern look.
  • Easy to care for, machine washable.
  • Backed by Merino.tech satisfaction guarantee.
  • Average Rating out of 5:
  • Price Range: $34.99
  • Size: Small,Medium,Large,X-Large,XX-Large,3X-Large
  • Color: .190 Charcoal Grey
18

IVOVFANZY Men's Thermal Turtleneck Shirt

  • Soft, stretchy fabric for all-day comfort.
  • Classic high neck for warmth and style.
  • Perfect for layering under jackets or blazers.
  • Versatile for work, parties, or casual outings.
  • Moisture control keeps you dry and warm.
  • Machine washable and wrinkle-resistant for easy care.
  • Available in multiple colors for every style.
  • Average Rating out of 5:
  • Price Range: $10.39
  • Color: White
19

Zengjo Men's Thermal Mock Turtleneck Shirt

  • Soft brushed knit for cozy warmth.
  • Lightweight mock-neck design for comfort.
  • Flexible athletic fit for unrestricted movement.
  • Perfect for casual wear or active sports.
  • Ideal baselayer for cold-weather activities.
  • Machine washable for easy care.
  • No bleach or iron to preserve quality.
  • Average Rating out of 5:
  • Price Range: $18.99
  • Color: Light Brown
  • Material: 5 positive
20

Hicarer Men's Long Sleeve Compression Shirts (6 Pack)

  • 6 pack of versatile long sleeve compression shirts.
  • Comfortable polyester and spandex blend for durability.
  • Excellent moisture-wicking for quick drying.
  • Breathable fabric keeps you cool during workouts.
  • Round neck design ensures comfort and ease.
  • Perfect for gym, running, and various sports.
  • Can be worn as casual pajamas too.
  • Average Rating out of 5:
  • Price Range: $35.99
  • Color: Black
21

MEETYOO Men's Compression Long Sleeve Shirt

  • High-performance baselayer for body shaping.
  • 92% Polyester and 8% spandex blend.
  • Moisture-wicking and breathable fabric.
  • Instantly absorbs sweat and dries quickly.
  • Excellent flexibility for unrestricted movement.
  • Ideal for various outdoor and gym activities.
  • 100% satisfaction customer service guaranteed.
  • Average Rating out of 5:
  • Price Range: $9.99
  • Color: White
  • Material: 65 positive
22

32 Degrees Men's 2-Pack Thermal Crewneck

  • Lightweight and breathable thermal construction.
  • Moisture-wicking fabric for all-day comfort.
  • Anti-static and anti-odor technology included.
  • 4-way stretch for unrestricted movement.
  • Fitted design ideal for layering under clothing.
  • Perfect for outdoor activities like skiing and hiking.
  • Easy care: machine wash and tumble dry.
  • Average Rating out of 5:
  • Price Range: $31.98
  • Color: Black/Black
23

HYCOPROT Men's Long Sleeve Compression Shirt

  • High-pressure material for muscle support.
  • Enhances athletic performance during workouts.
  • Promotes blood circulation and reduces fatigue.
  • Quick-drying fabric for all-day comfort.
  • Ergonomic design minimizes chafing during activities.
  • UPF protection against harmful sun rays.
  • Versatile for various sports and outdoor activities.
  • Average Rating out of 5:
  • Price Range: $11.99
  • Color: Black
24

JULY'S SONG Men's 5-Piece Gym Set

  • 5-piece gym set for versatile workouts.
  • Quick-drying, breathable materials for comfort.
  • Includes shirt, long sleeve, shorts, pants, and jacket.
  • Perfect for gym, jogging, and casual wear.
  • Skin-friendly, slim fit to showcase physique.
  • Ideal gift for Father's Day or Valentine's.
  • Free returns and responsive customer service.
  • Average Rating out of 5:
  • Price Range: $39.99
  • Color: Black/T-shirt
  • Material: 8 positive
25

Muscle Cmdr Slim Fit V Neck Thermal Tee

  • Soft and breathable knitted fabric for comfort.
  • Ribbed design adds visual interest and warmth.
  • Perfect for layering in colder weather.
  • Versatile style for casual or business occasions.
  • Available in multiple sizes for proper fit.
  • Ideal for workouts, leisure, and daily wear.
  • Great gift option for men in your life.
  • Average Rating out of 5:
  • Price Range: $19.99
  • Color: A-white
26

Merino.tech 100% Merino Wool Hoodie (Men)

  • Athletic slim fit for comfortable daily wear.
  • Includes merino wool socks, a $21 value.
  • Superfine merino wool for itch-free comfort.
  • Moisture-wicking and odor-resistant properties.
  • Perfect for outdoor activities and gym use.
  • Easy care: machine washable and air dry.
  • Backed by Merino.tech Promise for satisfaction.
  • Average Rating out of 5:
  • Price Range: $62.99
  • Color: 190 Camo
27

Zengjo Men's Compression Mock Neck Shirt

  • Stylish mock turtleneck design for added warmth.
  • Mid-weight 4-way stretch for optimal mobility.
  • Light compression enhances performance and reduces vibrations.
  • Tagless collar prevents friction during activities.
  • Available in solid colors and camouflage patterns.
  • Perfect baselayer for various outdoor sports.
  • Machine washable for easy maintenance and care.
  • Average Rating out of 5:
  • Price Range: $18.99
  • Color: White
  • Material: 4 positive
28

SPVISE Men's Long Sleeve Compression Shirt

  • Premium non-abrasion fabric for durability.
  • Ultra-soft material for all-day comfort.
  • Ergonomic fit contours to your body.
  • Moisture-wicking for quick sweat evaporation.
  • Suitable for all-season activities.
  • Perfect for various sports and workouts.
  • Customer satisfaction guarantee with support available.
  • Average Rating out of 5:
  • Price Range: $13.79
  • Size: Small,Medium,Large,X-Large,XX-Large
  • Color: B# Black
  • Material: 12 positive
29

Kickoff Flexwear Thermal Long Johns Set

  • Lightweight thermal set for ultimate comfort.
  • Perfect for active and relaxing occasions.
  • Moisture-wicking fabric keeps you dry.
  • Fade-resistant and pill-free for lasting wear.
  • Easy machine wash for hassle-free care.
  • Snug fit layers well under any outfit.
  • Ideal for cold weather adventures and lounging.
  • Average Rating out of 5:
  • Price Range: $17.99
  • Color: Dark Sand
30

Merino.tech Men's Wool Half Zip Sweater

  • Superfine 17.5 Micron merino wool for comfort.
  • Available in lightweight, midweight, and heavyweight options.
  • Moisture-wicking properties keep you dry and fresh.
  • Easy care: washer safe and air dry.
  • Quarter zip design for versatile styling.
  • Great gift with cool packaging included.
  • Merino.tech Promise ensures 100% satisfaction guarantee.
  • Average Rating out of 5:
  • Price Range: $64.99
  • Color: 320 Black