Skip to main content

It's time to upgrade your browser

Your current browser is no longer supported on llbean.com. Please upgrade to one of the following for a smoother, safer shopping experience with us:

Thermal Base Layers for Cold Weather

Find thermal base layers for cold weather to start your layering system. Browse the selection and compare each item’s fit, fabric and care details to choose base layers that suit your preferences and fit beneath your other clothing.

Read More
Men's Two-Layer Union Suit
L.L.Bean Men's Two-Layer Union Suit
A supersoft, charcoal union suit with a wool blend for warmth and a roomy fit for comfort.
(541)
$99.95 $99.95
SALE
What customers like:
Functional
Fits well
Well-made
Warmth
Comfortable
$99.95 $99.95
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 saddle heather that wicks sweat, resists odor, and keeps you warm.
(489)
$99.95 $84.99
SALE
What customers like:
Perfect fit
Soft and comfortable
Durable fabric
Available in big and tall sizes
Great warmth
$99.95 $84.99
SALE
Men's Silk Underwear, Pants
L.L.Bean Men's Silk Underwear, Pants
A strong, lightweight black silk base layer offering warmth and comfort without added bulk.
(486)
$54.95 $54.95
SALE
What customers like:
Great fit
Quality
Warmth
Comfortable
Versatile for weather
$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 itch-free merino wool, perfect for warmth and odor resistance.
(439)
$99.95 $84.99
SALE
What customers like:
Odor resistant
Great color
Versatile use
Easy to layer
Excellent warmth
$99.95 $84.99
SALE
Men's Silk Underwear, Crewneck
L.L.Bean Men's Silk Underwear, Crewneck
A men's black silk crewneck providing lightweight warmth and comfort, perfect as a base layer.
(410)
$54.95 $54.95
SALE
What customers like:
Durable
Comfortable
Warm
Great for travel
Feels like real silk
$54.95 $54.95
SALE
Men's Double-Layer Underwear, Pants
L.L.Bean Men's Double-Layer Underwear, Pants
A durable, dark indigo thermal underwear with a wool blend exterior and soft cotton interior for ultimate warmth.
(392)
$54.95 $54.95
SALE
$54.95 $54.95
SALE
Women's Cresta Midweight 250 Pants, High-Rise Slim-Leg
L.L.Bean Women's Cresta Midweight 250 Pants, High-Rise Slim-Leg
A high-rise, slim-leg base layer made of 100% merino wool in eggplant heather, size extra large.
(390)
$99.95 $84.99
SALE
What customers like:
Great fit
Warmth
Non-itchy
High-quality fabric
Comfortable
$99.95 $84.99
SALE
Men's Double-Layer Underwear, Crewneck
L.L.Bean Men's Double-Layer Underwear, Crewneck
A men's thermal shirt with a double-layered wool blend and nylon construction in charcoal heather.
(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 Cresta Midweight 250 Quarter-Zip Top
L.L.Bean Men's Cresta Midweight 250 Quarter-Zip Top
A versatile midweight merino wool base layer in saddle heather, featuring a quarter-zip and thumbhole cuffs.
(375)
$120 $99.99
SALE
What customers like:
Convenience
Keeps you warm
Comfort
Durability
Versatility
$120 $99.99
SALE
Women's Cresta Midweight 250 T-Zip Top
L.L.Bean Women's Cresta Midweight 250 T-Zip Top
An eggplant heather merino wool base layer that wicks sweat, resists odor, and keeps you warm.
(203)
$120 $99.99
SALE
What customers like:
Good quality
Warmth
True to size
Versatile
Comfortable
$120 $99.99
SALE
Women's L.L.Bean Simple Soft Base Layer, Pants
L.L.Bean Women's L.L.Bean Simple Soft Base Layer, Pants
A lightweight, moisture-wicking synthetic base layer pant in dark black, perfect for everyday warmth and comfort.
(116)
$54.95 $54.95
SALE
What customers like:
Adds extra warmth
Lightweight
Softness
Good fit
Comfortable
$54.95 $54.95
SALE
Men's L.L.Bean Simple Soft Base Layer, Pants
L.L.Bean Men's L.L.Bean Simple Soft Base Layer, Pants
A lightweight, moisture-wicking base layer pant in faded sage heather, made from 94% polyester and 6% spandex.
(86)
$54.95 $54.95
SALE
What customers like:
Great for layering
Provides warmth
Lightweight feel
$54.95 $54.95
SALE

Thermal Base Layers for Cold Weather

Thermal Base Layers for Cold Weather are a starting point for getting dressed when the temperature drops and an extra layer feels welcome. On mornings when there’s frost along the window and everyone is gathering coats by the door, it helps to have the first part of your outfit already figured out. Start your selection with the clothes you plan to wear over it: a close-fitting shirt leaves a different amount of room than a generous sweater, and the waistband of your usual pants matters when adding a layer underneath. Look at each item’s fit description and measurements rather than relying on your usual size alone. A base layer should fit into your wardrobe as thoughtfully as any other everyday essential, with a shape and feel you’ll be happy to reach for throughout the cold-weather season.

Choosing between thermal base layers often comes down to small, personal preferences. Consider whether you prefer a higher or lower neckline, where you like a top’s hem to fall, and how sleeve and leg lengths compare with clothing you already own. Product photographs can offer a useful first impression, but individual descriptions and size charts are the better place to check the details. If you’re choosing both a top and a bottom, assess their sizes separately; the right fit on one half doesn’t always mean the same size will work on the other. Think through the whole outfit, too, including where cuffs, waistbands and hems will meet. Those overlapping edges are easy to overlook while shopping, yet they can make a difference in how an outfit feels once you’re dressed. Check the care instructions before deciding, especially if you prefer pieces that fit into an established laundry routine.

Thermal base layers can also make a thoughtful gift for someone who appreciates practical additions to a cold-weather wardrobe. The most useful clues are often familiar ones: the neckline they tend to choose, the fit of their favorite shirts, or whether they like their layers tucked in. When possible, confirm measurements instead of guessing, and consider which part of their wardrobe could use an addition rather than assuming they need a complete set. For your own collection, take a quick look at what’s already in the drawer before choosing. Replacing a poorly fitting piece or adding a second option to the weekly rotation can be more useful than buying several at once. Whether you’re shopping for yourself or someone close to you, focus on the individual details that make getting dressed for cold weather feel a little more straightforward—and leave more time for enjoying the day together.

Read More

FAQs