Base layer options have evolved significantly, offering enhanced comfort, moisture-wicking properties, and thermal regulation for outdoor enthusiasts. The best base layers are designed to keep you warm in cold conditions while remaining breathable during high-intensity activities. Whether you're skiing, hiking, or simply enjoying a chilly day, investing in a quality base layer can make all the difference in your overall experience. From merino wool to synthetic blends, the variety available ensures that there's something for everyone. Explore the top choices to find the perfect fit for your adventures.
Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Large, Black)
- Heat Retention: When it comes to warmth and everyday wear, these long johns for men is designed specifically for you to stay protected from the cold.
- Ultra Soft Fleece: Designed with a fleece lining & quality material, these ultra soft mens thermal underwear set will keep you feeling comfortable throughout the day.
- Moisture Wicking: Stay dry with these long underwear mens as they're made from breathable fabric that effectively wicks away moisture and perspiration.
- 4 Way Stretch: Made with stretchable material, these thermals for men allows you freedom of movement with no chafing or bunching up when you move.
- Layer Up: Layering is essential to ward off the cold, so bundle up with a pair of mens thermals this winter and stay comfortable while outside or in bed as a pajama.
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SALE
−$10.00
Thermajane Long Johns Thermal Underwear for Women Fleece Lined Base Layer Pajama Set Cold Weather (Medium, White)
- Heat Retention: Thermajane womens thermal underwear keeps your body heat from escaping. They provide extra warmth and coziness to make a perfect everyday baselayer.
- Ultra Soft: Our thermals for women are lined with fleece for extra softness against your skin. They’ll protect you from the cold for added comfort.
- Moisture Wicking: While at home or at work, our womens long johns will keep you dry and odor free. No matter the activity, you’ll stay confident all day.
- 4 Way Stretch: The soft and stretchable fabric on these womens long underwear fit snugly against your skin and will keep you moving freely no matter what your activity is.
- Layer Up: When it comes to style and comfort, our womens thermals is the ideal base layer to wear throughout your day.
$29.99
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
- COLD-WEATHER READY: Stay cozy in the cold with a brushed fleece inside and matte soft outside. Our heavyweight 2-piece thermal set has moisture-wicking fabric that helps absorb and evaporate moisture.
- SPANDEX STRETCH: This womens top and bottom set features a spandex stretch for on-the-go comfort. The densely knit fabric gives you a snug fit and shields you from harmful UV rays for an extra layer of protection.
- HEAD-TO-TOE PROTECTION: Our thermal underwear has 50+ protection from harmful UV rays. With a thumbhole sleeve top, modern rise leggings, and tag-free label, look and feel great all day and night.
- COMPLETE COMFORT: Keep warm without the bulk with our stylish thermal underwear sets. The sleek design makes it versatile enough to wear as a base layer or on its own while you’re out on the go or lounging at home.
- Live in Layers: For 50+ years, Cuddl Duds has provided comfy thermal underwear. Our innovative technology helps you stay warm and look good doing it — because layering is a lifestyle.
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SALE
−$2.00
WEERTI Thermal Underwear for Men Long Johns with Fleece Lined, Base Layer Men Cold Weather Top Bottom Black
- LAYERING IS ESSENTIAL: The perfect cold-weather outfit is all about proper layering, so starting off thermal underwear is a must. Its provide insulation by trapping body heat and wicking away moisture, and disappear under everything from puffer jackets to cashmere sweaters.
- ALL-DAY COMFORTABLE WEARING EXPERIENCE: Long johns for men fit snug like a second skin for minimizing heat loss, lightweight but warm, gives you a sense of security throughout the winter.
- STRONG MOISTURE WICKING: Thermal long underwear mens is made of moisture wicking and breathable fabric, wick away sweat fast to keep you dry and light, easily keep away from the clammy feeling.
- PERFECT DESIGN FOR MAN：Mens long johns perfect for use underneath formal or casual attire, or they can be worn as comfy pajamas on chilly nights. Dress up this set under your clothing to keep warm and cozy in cold climates or bad weather.
- FLEXIBILITY FOR ANY MOVEMENT: Men's thermal underwear 4-way stretch delivers full mobility, its strong seams won’t tear prematurely. You’ll feel a sense of freedom in all your activities, they will keep you warm without sacrificing your range of motion or comfort.
$29.99
SALE
−$5.53
Under Armour Men's HeatGear Armour Leggings , Black (001)/Pitch Gray, Large
- Super-light HeatGear fabric delivers superior coverage without weighing you down
- Strategic mesh panels for added ventilation where you need it
- Material wicks sweat & dries really fast
- Ergonomic design keeps seams off high abrasion areas & increases durability
- Wide, exposed elastic waistband with wordmark detail
$29.47
Carhartt Men's Force Midweight Classic Thermal Base Layer Pant, Black, Medium
- Waffle knit traps heat, fast dry wicks away sweat and fights odor
- Rugged flex technology for ease of movement
- Smooth flatlock seams and tagless label enhance comfort
- Concealed dry low-stitch waistband and contoured front for comfort
- Strategic seam placement for maximum comfort and reduced chafing
$34.99
SALE
−$30.00
Merino.tech Merino Wool Base Layer Mens Set - Heavyweight, Midweight, Lite Merino Wool Thermal Underwear For Men Top, Bottom (Large, 250 Black)
- Midweight: Mens Merino Base Layer Available in: Lightweight = 165 g/m², Midweight = 250 g/m², Heavyweight = 320 g/m². Free Merino Wool Hiking Socks ($21 Value) – Package includes Midweight Merino wool base layer mens top and wool men long johns 250 g/m² + Merino Wool Hiking Socks. Cool Packaging. Makes A Great Gift.
- Super Soft & Comfortable: 100% Superfine 17.5 Micron merino wool base layer set mens provides all day comfort and no itch! Merino wool long underwear men set was 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.
- 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.
- Zero Worries: Every we make merino wool base layer top mens and long johns are 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
$99.99
ALPIDEX Functional Wear Thermal Underwear Men Ski Breathable Quick Drying Clothing Warm Base Layer Mens Cold Weather Set Long Johns Top Bottom, Size:l/xl, Colour:Black-Grey
- ⭐️ VERSATILE: the functional underwear keeps warm not only during winter sports but also when walking the dog or visiting the christmas market
- ⭐️ COMFORTABLE: extra flat seams provide comfort and freedom of movement, even under jeans and sweaters * material: 70% polyamide, 22% polyester, 8% elastane
- ⭐️ ROBUST: the underwear is easy to clean and dries quickly. Due to the polyamide content, the material does not wear out even after repeated washing and wearing
- ⭐️ BREATHABLE: carefully placed inserts help air circulation and heat regulation. The air-permeable material prevents cooling or overheating
- ⭐️ INVISIBLE: the set of pants and long-sleeved shirt is hardly noticeable and is available in two colors: black-gray and black-red, as well as in sizes S/M; L/XL; 2XL/3XL
$9.99
SALE
−$7.25
PISIQI Thermal Underwear Women Ultra-Soft Long Johns Set Base Layer Skiing Winter Warm Top & Bottom Black
- MATERIALl: Thermal underwear set is made of ultra-soft polyester that feels cozily soft, is completely non-irritating, and keeps you comfortably warm to beat the cold weather.
- BREATHABILITY: Breathable fabric is perfect to keep sweat away. At the same time, the lightweight thermal clothing maintains your body heat at a cool temperature wicking moisture away from your skin.
- STRETCHABLE: Four-way stretch and gives you the needed warmth without thick or heavy layers. The suit can be repeatedly washed without shrinking. Machine wash.
- FEATURE: This long underwear to keep you toasty without being too bulky. You can easily slip your daytime clothes or pajamas over the thermal base layer, . Tights or shirt can be used as base layer or worn alone.
- APPLICATION: Ladies extreme ultralight warmest top and tights Sets makes your favorite cold weather activities more pleasant. Whether you are hiking, biking, hunting, snowboard, ski and camping or other outdoor.
$17.73
SALE
−$19.00
Carhartt mens Force Midweight Classic Crew Base Layer Top, Black, XX-Large Tall US
- Built with Force technology to wick sweat and dry fast; FastDry wicks sweat
- Fights odor; strategically placed flatlock seams reduce chafing
- Concealed thumb loop; locker loops
- Tagless labels
- If your measurement falls between sizes on the size chart, buy the larger size
$25.99
Last update on 2025-05-02 / Affiliate links / Images from Amazon Product Advertising API