Best S Mens Base Layers in 2025

Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior

4-way stretch construction moves better in every direction

Material wicks sweat & dries really fast

Stay comfortable all day long with our lightweight and quick-dry fabric that wicks moisture away from your skin.

Protect your skin from the sun's harmful UVA/UVB rays with our UPF 50+ fabric.

Say goodbye to chafing with our flatlock seamlines and tagless collar that increase comfort.

Odor-resistant

Temperature regulating

Will help keep you cool when your intensity amps up, and its design helps minimize chafing

Rapid-dry, interlock jersey knit wicks away moisture to keep you cool

50+ upf rating for excellent uv protection

More tailored, contemporary fit

The Heavyweight Bottom is a foundational next-to-skin baselayer that keeps the lower limbs warm during long periods of frigid inactivity while wicking moisture when on the move. With a comfort stretch fleece for warmth and channeled construction for added breathability and moisture management, the Heavyweight Bottom is perfect for cold weather days spent in a layout blind, stand or glassing in the backcountry.

GORE OPTIFADE Concealment Open Country is scientifically optimized for engagement ranges of 50 yards and beyond at ground level in rocky terrain above the timber line.

Fabric: Heavyweight Comfort Stretch Fleece (93% Polyester/7% Elastane).

Moisture wicking fabric is quick-drying, ultra-soft & has a soft feel, keeping you comfortable through any athletic activity.

Designed for a comfortable experience. Crew-neck provides a nonrestrictive fit; Long-sleeve allows for a wider range of motion

UPF 50+ provides protection from harmful UV rays

Check the size chart of the third picture to select the appropriate size

4-way stretch construction moves better in every direction, tight fitting,like a second skin

Moisture Transport System sweeps away sweat and dries quickly; Flat lock seams to prevent chafing

87% Polyester, 13% Spandex. Fleece Lined. Machine Washable.

Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior. For all-over warmth, pair the shirts with our youth sports tights.

Moisture wicking/ Quick-Dry fabric absorbs sweat from the skin,keeping you dry and comfortable

Chic Design: Button placket and simple look that make this golf polo shirt a go-to for the office or the vacation.

Sweat-Wicking: Wicks away moisture remarkably fast by incorporating soft and breathable fabrics with rapid cooling technology to keep you cool with all-day comfort even when the competition heats up.

All Day Comfort: This men's tennis polo shirt is a comfortable polo shirt.Lightweight, soft and breathable stretchy fabric to give you a cool feeling in the hot summer.

WOOL LEGGINGS FOR MEN: These second skin wool leggings with fly are the perfect foundation for your everyday cold-weather layering system. Insulated, breathable & odor resistant for long days & nights of hiking & camping.

MEN'S LEGGINGS: Wool men's base layer slim fit leggings feature brushed elastic waistband for a comfortable fit & flat-lock seams to reduce chafing. Crafted of 100% merino wool.

MERINO WOOL LAYERS: Stay warm from head to toe in Icebreaker outdoor clothing gear. Keep covered in wool gloves, glove liners, mittens, bras, wool base layers such as tops, under shirts, leggings, bras, underwear & more.

Quick dry and breathable fabric. Won't deform and fade, as mild as the second skin. Keep cool in summer, stay dry and warm in winter, excellent for outdoor sports

2 side pockets provide the convenience of carrying essentials for outdoor sports; wide waistband for optimal coverage and the 4 way stretch fabric for mobility in any direction, more flexible and cool dry in training

Aesthetic part of your workout and optimize your performance. Leggings provided excellent protection from the sun, the flatlock seams against abrasions and make it more durable

MIDWEIGHT – Mens Merino Base Layer Available in: Lightweight = 165 g/m², Midweight = 230-250 g/m², Heavyweight = 320+ g/m².

SUPER SOFT & COMFORTABLE – 100% Superfine 18.5 Micron Merino Wool Mens Base Layer provides all day comfort and no itch! Designed for daily wear without rubbing, overheating, or bunching of regular cotton.

MOISTURE WICKING – Merino base layer mens natural wicking properties allow it to absorb moisture better than any other fabric, keeping you dry and fresh.

ULTRA SOFT AND SUPER WARM: CL Convallaria mens thermal underwear set is made of 90% Polyester / 10% Spandex blend fabric with high density fleece lined, the insulation material which can lock your body heat well. The super skin-touch and ultra soft long johns for men fit snug like a second skin for minimizing heat loss and keep you warm in the cold winter.

STRONG MOISTURE WICKING(WITHOUT THE SWEATY MESS): Our fans say the unique breathable, moisture-wicking fibers on CL thermal underwear will wick away moisture to keep you dry with no sticky or clammy feeling so you can wear them all day for your work or snow adventure. The smiles on men's faces will tell you how satisfied with this thermal underwear set.

4-WAY STRETCH INSULATED UNDERWEAR: While adopting the design of the Four-way stretch, we improved the crotch and armpit according to the feedback of market customers. make the reach and squat more comfortable while retaining excellent elasticity and durability for maximum mobility. CL uses high-quality stitching for thermal leggings and long sleeve shirts to beat super-active days and many muddy adventures.And insulated design let you get rid of static trouble in dry autumn and winter.

Heat Retention: When it comes to warmth and everyday wear, these mens thermal long sleeve shirt 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 shirt will keep you feeling comfortable throughout the day.

Moisture Wicking: Stay dry with these mens long underwear as they're made from breathable fabric that effectively wicks away moisture and perspiration.

TSLA Thermal Shirt Series designed for cold weather.

[Materials] Mix of Polyester & Spandex fabric is excellent elasticity with enhanced range of motion.

[Fleece Lining] Thermal fleece lining designed to enhance the warmth and thermal insulation.

PACKAGE INCLUDES: 1 – Men’s Merino Wool Thermal Crewneck Top in Black / Medium | MATERIAL: 18.5 Micron, 100% Merino wool, 400g/m2 | FIT: Fitted

SUPER SOFT: 100% all natural superfine 18.5-micron Merino wool ensures comfort all day – no itch! EASY CARE: Heavyweight long sleeve crew top shirt is machine-washable and dryer-safe, so it’s ready when you are for your next adventure.

400g OF WARMTH: Our most popular 250g midweight crewnecks just got an upgrade! Take your warmth to the next level with our new 400g heavyweight crewneck tops. The perfect base or mid layer for cold to freezing conditions make these thermal tops our warmest and thickest base layers yet! COMFORTABLE & CONVENIENT: These quick-drying shirts with a UPF Rating 50+ are perfect for your next trip, whether your camping, hiking, hunting, playing sports, skiing, or partaking in any outdoors activity.

Men's thermal underwear is made of polyester and micro-fleece fabric to give the ultimate warmth during the cold weather. Mens base layer will keep you slim and warm in winter or spring.(Note:this thermal set no open fly)

Breathable and moisture wicking fabric is perfect to keep sweat away and dry fast, mens thermal clothes can removes sweat and stickiness while preventing colds.The mens compresssion set will make you feel relax after you sports.

Ultra soft brushed back fabrication provides ultra-comfortable wear Long johns for men is extremely soft and smooth, lightweight, and non-bulky, anti-static four-way stretch fabric for a snug-fit, shrinkage controlled for lasting size and shape retention.

[Excellent Flexibility For Any Movement] The men’s thermal clothing is designed with four way stretch compression for your freedom of outdoor activities, never have bound feeling. Flat lock will prevent chafing and irritation of skin. Ignore the size chart provided by amazon, check the size chart of the last picture to select the appropriate size *The set is designed for outdoor sports, there is NO OPEN FLYING on the pants*

[Slim&Light But Keep Warm In Winter] There are a long sleeves shirt and pants in package. They’re really light, soft and comfortable, especially for keeping warm in cold conditions. Ensure that the thermal long johns for men will bunch around your waistline or sleeves and reduce heat loss.

[Instantly Absorbing Sweat In Exercise] The thermal fitness shirt for men is made of moisture wicking and breathable fabric, which will absorb sweat and dry quickly in exercise and keep away from clammy feeling, provide a enough comfort and warmth when you play sports in cold weathers.

Lightweight & Breathability: Men's athletic hiking Shorts are made quality 4-Way Stretch/breathable and quick-drying fabric helps to wick away moisture and dry quickly keep you cool. A synthetic of polyester and spandex can be very durable, abrasion-resistant, and stretchy enough to allow for better mobility.

UNIQUE: Exercise cool Shorts have stylish casual breathable holes on both sides, designed exclusively by NORTHYARD. Soft Elastic waistband/ built-in adjustable drawstring for custom fit, flatlock seams reduce chafe for additional comfort and ease of movement.Two stylish reflective strips at the front and back allow you to improve safety in low-light situations.

3 Zipper Pockets: Men's athleisure unlined Shorts feature conveniently placed and easily accessible pockets so that you can quickly store and retrieve your items. The 2 side and 1 back pockets with zipper offer easy storage for your essentials and are also deep enough to prevent the items from falling out during activities.

OMNI-WICK: The ultimate moisture management technology for the outdoors. Omni-Wick quickly moves moisture from the skin into the fabric where it spreads across the surface to quickly evaporate—keeping you cool and your clothing dry.

ADVANCED TECHNOLOGY: Columbia Men's Thistletown Park Raglan Shirt features our signature UPF 15 sun protection fabric that helps to blocks harmful UVA and UVB rays as well as wicking technology to help keep you dry and cool on the trail.

CLASSIC FIT: Designed for fall and winter wear, this long sleeve T-Shirt is made for easy fit and comfortable range of motion.

Breathable, anti-odor stretch mesh^Wraparound supporter for maximum comfort and fit^Ultra comfort micro-knit waistband

Soft thermal fleece interior lining helps keep you warm

Form-fitting design for enhanced performance and mobility

Quick drying moisture-wicking fabric to keep you dry and comfortable

Cool Moisture Transport System for wicking away moisture and fast drying. Available in all Sizes Regular & Tall

Exceptional for Running Jogging Soccer Working Out, Gym Time, Swimming & all other active sports

Lightweight 3.8 ounce 100% Polyester for a super ultra soft feel

A 2-layer construction with flatlock seams, 100% wool exterior and the unique properties of technical lifa technology

[High-performance Baselayer for Body shaping] The fitness baselayer for men is designed with 92% Polyester and 8% spandex, which maintains its shape even after repeat washing. The athletic men’s compression set will give the protection for your skin, and joints , support your muscles well with less risk of rash, overheating or muscle fatigue in athletic activities

[Instantly Absorbing Sweat In Exercise] The sport long johns for men is made of moisture wicking and breathable fabric, which will absorb sweat and dry quickly, keep away from clammy feeling and help regulate body temperature in exercise. The gym underwear set will provide a enough comfort when you play outdoor sports and gym exercise

[Excellent Flexibility For Any Movement] The compression shirt for men is designed with four way stretch fabric for your freedom of activities, really slim and light without bound feeling, allowing you to bend, stretch, jump and run freely. It's great for running, hiking, cycling, marathon, training, playing basketball, football , baseball, volleyball.

Fast dry wicks away sweat and fights odor

Rugged flex technology for ease of movement

Smooth flat lock seams and tag less label enhance comfort

Materials: Polyester; Wrinkle-free, Quick Dry and Soft

UPF 50+: Excellent protection from the harmful effects of the Sun's UV Radiation

Quick Dry: This men's long sleeve shirt features high performance wicking fabric that pulls moisture away from skin, breathes freely and dries quickly for active

Sun Protection: breathable face cover design for your outdoor activities which provides windproof and UPF50+ for your top,facial, neck, head for all-round protection from the sun's harmful UVA/UVB rays.

Quick Dry & Breathable: Actively wicks moisture away from the skin, keeping you dry and comfortable. Great when you're out and about, and after washing too.

The 4-Way Stretch: The 4-way stretch & non see through fabric wicks moisture away from your skin for unrestricted movement and whole day comfort.

Reliable Heat Retention: These insulated pants for men feature our 2-layer design, which traps air between layers of fabric to provide a natural barrier of warmth

Comfortable Cotton-Poly Construction: Our men’s thermal pants are constructed of a comfortable cotton blend enhanced with polyester for added stability and utility

Comfort-Driven Design: The ultimate workout leggings, our men's thermals feature a tagless design, flat seams, and front and back rise for next-to-skin comfort; Ribbed cuffs help keep the cold out, while gussets and a front fly enhance functionality and maintain coverage while you're active

What You Get: Terramar Sports Thermasilk Women's Scoop top comes in Black, Natural and Grey options and in the following sizes: Small, Medium, Large and X-Large. Made from 100% pure silk, they feel extremely smooth and keep you warm

These shirts are very light weight and do not have additional bulk and made with our ClimaSense treatment to neutralize s, regulate your body temperature and wick away any sweat

Features: Thermoregulation Comfort Technology to regulate your body's natural temperature and keep your hands warm. It is built to stretch so there is no irritation or bunching