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Men's Thermal Base Layers

Find men's thermal base layers to build your outfit from the first layer up. As you browse the selection, compare each item's fit and sizing with your other layers in mind, and check individual product details for fabric and care information.

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Men's Cresta Midweight 250 Quarter-Zip Top
L.L.Bean Men's Cresta Midweight 250 Quarter-Zip Top
A versatile merino wool quarter-zip top in saddle heather, perfect for warmth and odor resistance.
(375)
$120 $99.99
SALE
What customers like:
Keeps you warm
Excellent base layer
Comfort
Durability
Versatility
$120 $99.99
SALE
Men's Cresta Ultralight 150 Crew Top
L.L.Bean Men's Cresta Ultralight 150 Crew Top
An alloy gray, extra-large base layer made of 100% merino wool, offering warmth and comfort year-round.
(157)
$89.95 $89.95
SALE
What customers like:
Soft material
Warmth
Good fit
Comfortable
Versatility
$89.95 $89.95
SALE
Men's Silk Underwear, Crewneck
L.L.Bean Men's Silk Underwear, Crewneck
A lightweight black silk crewneck providing strong, comfortable warmth as a perfect base layer.
(410)
$54.95 $45.99
SALE
What customers like:
Durable
Comfortable
Warm
Great for travel
Feels like real silk
$54.95 $45.99
SALE
Men's Two-Layer River Driver's Shirt®, Traditional Fit Henley
L.L.Bean Men's Two-Layer River Driver's Shirt®, Traditional Fit Henley
A green wool-blend Henley with dual-layer thermal construction for warmth and a relaxed, traditional fit.
(6,147)
$79.95 $79.95
SALE
What customers like:
Soft material
Warm and cozy
High quality and durable
Versatile for cold weather
Comfortable fit
$79.95 $79.95
SALE
Men's Double-Layer Underwear, Crewneck
L.L.Bean Men's Double-Layer Underwear, Crewneck
A men's thermal shirt with a double-layer design, featuring a wool blend/nylon outer and cotton inner.
(376)
$54.95 $54.95
SALE
What customers like:
Great fit
Very cozy
Exceptional warmth
Comfortable feel
Well made
$54.95 $54.95
SALE
Men's Double-Layer Underwear, Pants
L.L.Bean Men's Double-Layer Underwear, Pants
A pair of dark indigo thermal pants with a wool blend exterior and soft cotton interior.
(392)
$54.95 $54.95
SALE
$54.95 $54.95
SALE
Men's Cresta Midweight 250 Pants
L.L.Bean Men's Cresta Midweight 250 Pants
A versatile base layer made of 100% merino wool, offering warmth and odor resistance in saddle heather.
(439)
$99.95 $84.99
SALE
What customers like:
Very comfortable
Great color
Highly versatile
Easy to wash
Excellent warmth
$99.95 $84.99
SALE
Men's Cresta Wool Midweight 250 Crew Top
L.L.Bean Men's Cresta Wool Midweight 250 Crew Top
A midweight merino wool crew top in carbon navy that wicks sweat, resists odor, and keeps you warm.
(489)
$99.95 $99.95
SALE
What customers like:
Perfect fit
Soft and comfortable
Durable fabric
Available in big and tall sizes
Great warmth
$99.95 $99.95
SALE
Men's L.L.Bean Heavyweight Base Layer Hoodie, Print
L.L.Bean Men's L.L.Bean Heavyweight Base Layer Hoodie, Print
A heavyweight base layer hoodie in kelp green camo, made from recycled polyester and elastane.
(0)
$79.95 $79.95
SALE
$79.95 $79.95
SALE
Men's L.L.Bean Heavyweight Base Layer Crew Top, Print
L.L.Bean Men's L.L.Bean Heavyweight Base Layer Crew Top, Print
A heavyweight base layer crew top in kelp green camo, made from recycled polyester and elastane.
(0)
$64.95 $64.95
SALE
$64.95 $64.95
SALE
Men's L.L.Bean Heavyweight Base Layer Crew Top
L.L.Bean Men's L.L.Bean Heavyweight Base Layer Crew Top
A heavyweight base layer crew top in midnight black, made from recycled polyester with moisture-wicking properties.
(0)
$64.95 $64.95
SALE
$64.95 $64.95
SALE
Men's L.L.Bean Heavyweight Base Layer Pant
L.L.Bean Men's L.L.Bean Heavyweight Base Layer Pant
A midnight black heavyweight base layer pant made from recycled polyester, designed for warmth and moisture-wicking.
(0)
$64.95 $64.95
SALE
$64.95 $64.95
SALE
Men's L.L.Bean Heavyweight Baselayer Hoodie
L.L.Bean Men's L.L.Bean Heavyweight Baselayer Hoodie
A midnight black hoodie made from recycled polyester blend, offering warmth, moisture-wicking, and odor control.
(0)
$79.95 $79.95
SALE
$79.95 $79.95
SALE
Men's L.L.Bean Heavyweight Base Layer Pant, Print
L.L.Bean Men's L.L.Bean Heavyweight Base Layer Pant, Print
A heavyweight base layer pant in kelp green camo, made from recycled polyester for warmth and moisture-wicking.
(0)
$64.95 $64.95
SALE
$64.95 $64.95
SALE
Men's L.L.Bean Midweight Base Layer Crew Top, 1/4 Zip
L.L.Bean Men's L.L.Bean Midweight Base Layer Crew Top, 1/4 Zip
A versatile midweight base layer with REPREVE® recycled polyester, offering warmth, moisture-wicking, and odor resistance.
(0)
$64.95 $64.95
SALE
$64.95 $64.95
SALE
Men's L.L.Bean Midweight Base Layer Crew Top
L.L.Bean Men's L.L.Bean Midweight Base Layer Crew Top
A midweight, pinewood green base layer top made from recycled polyester blend, offering warmth, stretch, and odor resistance.
(0)
$54.95 $54.95
SALE
$54.95 $54.95
SALE
Men's Two-Layer Union Suit
L.L.Bean Men's Two-Layer Union Suit
A supersoft red union suit with a wool blend for warmth and nonchafing flatlock seams for comfort.
(541)
$99.95 $99.95
SALE
What customers like:
Soft material
Well-made
Warmth
Comfortable
Good fit
$99.95 $99.95
SALE
Men's L.L.Bean Midweight Base Layer Pants
L.L.Bean Men's L.L.Bean Midweight Base Layer Pants
A pair of pinewood green midweight base layer pants made from recycled polyester for warmth and moisture-wicking.
(0)
$54.95 $54.95
SALE
$54.95 $54.95
SALE
Men's Cresta Wool Ultralight 150 Pants
L.L.Bean Men's Cresta Wool Ultralight 150 Pants
An ultralight base layer made of 100% merino wool, offering warmth and odor resistance in alloy gray.
(142)
$89.95 $89.95
SALE
What customers like:
Stylish design
Lightweight feel
Durable material
Warm without bulk
Comfortable fit
$89.95 $89.95
SALE
Men's Cresta Ultralight 150 Turtleneck, Stripe
L.L.Bean Men's Cresta Ultralight 150 Turtleneck, Stripe
A fitted, itch-free 100% merino wool turtleneck in regatta blue, perfect as a base layer for winter sports.
(0)
$99.95 $84.99
SALE
$99.95 $84.99
SALE
Men's Cresta Wool Ultralight 150 Base Layer, Hoodie
L.L.Bean Men's Cresta Wool Ultralight 150 Base Layer, Hoodie
An ultralight, alloy gray Merino wool hoodie that wicks moisture, resists odors, and fits comfortably under helmets.
(86)
$99.95 $99.95
SALE
What customers like:
Soft and fleecy interior
Ideal for winter sports
Warm and comfortable
Good fit
Fashionable and supportive
$99.95 $99.95
SALE
Men's Cresta Ultralight 150 Hoodie, Stripe
L.L.Bean Men's Cresta Ultralight 150 Hoodie, Stripe
A form-fitting, 100% merino wool hoodie in regatta blue, ideal as a base layer for cold-weather sports.
(0)
$99.95 $84.99
SALE
$99.95 $84.99
SALE
Men's L.L.Bean Synthetic Silk Base Layer Top, Long-Sleeve Crew
L.L.Bean Men's L.L.Bean Synthetic Silk Base Layer Top, Long-Sleeve Crew
A lightweight brown synthetic baselayer top with a silk-like feel and smooth warmth under layers.
(0)
$44.95 $44.95
SALE
$44.95 $44.95
SALE
Men's Cresta Wool Ultralight 150 Pant, Stripe
L.L.Bean Men's Cresta Wool Ultralight 150 Pant, Stripe
A slim-leg base layer pant made of itch-free 100% merino wool, available in regatta blue and glacier blue.
(0)
$89.95 $75.99
SALE
$89.95 $75.99
SALE

Men's Thermal Base Layers

Men's Thermal Base Layers are the starting point for a thoughtfully layered wardrobe, with choices that come down to personal preference as much as size. Some men like a close fit beneath their usual clothes; others prefer a little more room. As you browse, consider how each option fits into what you already own, from the shirts you reach for most often to your favorite outer layers. A familiar neckline, the right sleeve length and proportions that suit your frame can help narrow the selection. There’s something satisfying about opening a drawer and finding the pieces you like wearing together, without having to rethink the whole outfit. Choosing base layers with your existing wardrobe in mind keeps that decision simple and personal.

The details are worth comparing, especially when two thermal base layers look similar at first glance. Look at the listed measurements and fit descriptions rather than relying on your usual size alone, since a close-fitting style and a more relaxed cut can feel quite different in the same size. For tops, consider the length through the body and sleeves, along with how you like the neckline to sit beneath another shirt. For bottoms, waist sizing, inseam and the shape through the leg are useful points of comparison. Product photos can offer a sense of the silhouette, while individual descriptions provide the details that aren’t obvious on a screen. Care instructions deserve a look, too: choosing pieces that fit your regular laundry routine is a practical consideration that’s easy to overlook when you’re focused on fit and appearance.

Thermal base layers can also make a thoughtful gift for someone who appreciates useful additions to his wardrobe. The best starting point is what he already likes: a particular fit, a familiar color or a simple style he returns to again and again. Checking the size of a well-loved piece can be more helpful than guessing, though it’s still worth comparing that information with the sizing provided for your selection. Whether you’re choosing a gift or updating your own drawer, there’s no need to replace everything at once. A top or pair of bottoms that complements what’s already there can be a welcome addition. Explore Men's Thermal Base Layers with those everyday preferences in mind, and choose the pieces that feel like a natural part of getting dressed.

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