Thermal Underwear Tops

Thermal underwear tops are the perfect companions for chilly days, offering a cozy layer of warmth that keeps you comfortable no matter where your adventures take you. Crafted with quality materials, these tops provide lasting value and durability, ensuring you stay toasty season after season. Ideal for layering or wearing on their own, they blend seamlessly with your outdoor gear, making them a versatile addition to any wardrobe. Whether you're hiking through snow-covered trails or simply enjoying a brisk morning walk, thermal underwear tops offer the reliable warmth and comfort you need to fully embrace the great outdoors.

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Men's Double-Layer Underwear, Crewneck
Price was from: $49.95 now: $24.99

A gray wool-blend crewneck sweatshirt featuring double-layer thermal construction for superior warmth.
Men's Signature Waffle Crew
Price was from: $89 now: $74.99

A slim-fitting, deep port thermal crew made from breathable 100% waffle-knit cotton for cooler weather.

Pros: High quality Great color Good fit Comfortable waffle knit Excellent warmth
Women's Silk Underwear, Scoopneck

A women's cream silk long-sleeve undershirt offering comfortable warmth without bulk.

Pros: Great fit Soft material Lightweight Silky feel Comfortable warmth
Men's Silk Underwear, Crewneck

A lightweight, dark flint gray crewneck made from 100% silk, perfect as a warm base layer.

Pros: High fabric quality Durable material Great for travel Comfortable fit Excellent warmth
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.

Pros: Soft and fleecy interior Ideal for winter sports Warm and comfortable Good fit Fashionable and supportive
Men's Cresta Ultralight 150 Crew Top, Stripe

A remarkably soft and warm striped crew top made of 100% merino wool with thumbhole cuffs.
Men's Cresta Wool Midweight 250 Crew Top

A dark black merino wool crew top that wicks sweat, resists odor, and features thumbhole cuffs.

Pros: Great fit Comfortable feel Durable material Soft fabric Excellent warmth
Women's Silk Underwear, Turtleneck

A lightweight, cream silk turtleneck providing breathable warmth without bulk, perfect under casual or active outfits.

Pros: Excellent customer service Thin and comfortable Soft and warm material Lightweight and warm Perfect turtleneck fit
Men's Cresta Midweight 250 Quarter-Zip Top

A midweight merino wool quarter-zip top in dark black, offering warmth, sweat-wicking, and odor resistance.

Pros: Keeps you warm Excellent base layer Comfort Durability Versatility
Women's Cresta Midweight 250 Crew Top

A midweight merino wool crew top in eggplant heather, designed to wick sweat and resist odor.

Pros: Perfect base layer Breathability Warmth Softness Regulates body temperature
Women's Cresta Midweight 250 T-Zip Top

An eggplant heather midweight merino wool top that wicks sweat, resists odor, and keeps you warm.

Pros: Good quality Warmth True to size Versatile Comfortable
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.

Pros: Soft material Warmth Good fit Comfortable Versatility
Women's Cresta Ultralight 150 Crew Top

An alloy gray, form-fitting crew top made of 100% merino wool, perfect as a lightweight base layer.

Pros: Not itchy Lightweight Warmth Versatile Comfortable
Women's L.L.Bean Simple Soft Base Layer, Crew

A lightweight, moisture-wicking synthetic base layer with thumbholes, perfect for everyday warmth and easy layering.

Pros: Great fit Smooth fabric Softness Dino style Material
Women'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.

Pros: High-quality material Easy to care for Perfect under layer Lightweight design Comfortable fit
Women's Cresta Wool Ultralight 150 Turtleneck

An ultralight, form-fitting turtleneck made of 100% Merino wool, in alloy gray, with thumbhole cuffs.

Pros: Cleanliness High quality Warmth Comfortable fabric Low maintenance
Women's Cresta Ultralight 150 Crew Top, Stripe

An itch-free 100% merino wool base layer, perfect for cold-weather sports, available in ocean waves and storm teal.

Pros: Ideal as long underwear Provides excellent warmth Soft merino wool material
Men's L.L.Bean Simple Soft Base Layer, Crew

A lightweight, moisture-wicking synthetic base layer crewneck in faded sage heather, perfect for everyday warmth.
Men's Cresta Ultralight 150 Hoodie, Stripe

A form-fitting, 100% merino wool hoodie in regatta blue, perfect as a base layer for winter sports.
Women's Cresta Ultralight 150 Turtleneck, Stripe

A form-fitting, 100% merino wool turtleneck in ocean waves or storm teal, perfect for cold-weather activities.
Men's L.L.Bean Heavyweight Base Layer Hoodie, Print

A heavyweight base layer hoodie in kelp green camo, made from recycled polyester, wicks moisture and controls odor.
Men's L.L.Bean Heavyweight Base Layer Crew Top

A heavyweight, moisture-wicking base layer made from recycled polyester with thumb holes and anti-microbial finish.
Men's L.L.Bean Lightweight Crew Base Layer, Long Sleeve
Price was from: $39.95 now: $24.99

A lightweight black synthetic crew with moisture-wicking, quick-dry, and odor-resistant properties for active comfort.
Men's L.L.Bean Heavyweight Baselayer Hoodie

A midnight black hoodie made from recycled polyester blend, offering warmth, moisture-wicking, and odor control.

Thermal Underwear Tops

When crisp air starts to settle in and the days grow shorter, thermal underwear tops become an essential part of any wardrobe, offering a layer of reliable warmth and comfort that makes all the difference. Whether you’re out for an early morning hike, stacking firewood, or simply savoring a mug of hot cocoa on the porch, the right thermal top helps you stay cozy without feeling bulky or restricted. These tops are thoughtfully designed to trap body heat, wick away moisture, and provide a soft, comfortable feel next to your skin, making them a go-to choice for anyone who loves spending time outdoors or wants a little extra warmth under everyday clothes. With the transition from summer to fall, it’s the perfect time to think ahead and add a few quality thermal layers to your collection—especially for those who appreciate being prepared for the first cool snap or an impromptu camping trip.

Thermal underwear tops are a smart, practical gift for just about anyone—kids heading off to school, friends who love autumn bonfires, or family members who work outside year-round. They’re also a thoughtful addition to care packages for college students or loved ones living in colder climates. The best thermal tops are made to last, with durable fabrics that hold up to repeated washing and wear, and timeless styles that fit seamlessly under sweaters, flannels, or jackets. Easy to layer and versatile enough for everything from raking leaves to snowshoeing, they’re a must-have for anyone who wants to make the most of every season. When choosing a thermal top, consider the type of activities you’ll be doing—lightweight options are great for layering under dress shirts or blouses, while heavier versions offer extra insulation for brisk walks or chilly mornings at the cabin. Features like flatlock seams, tagless labels, and stretch materials help ensure lasting comfort, whether you’re wearing them for a quick dash to the mailbox or an all-day adventure in the woods.

For men looking to round out their cold-weather wardrobe, our selection of Men's Thermal Base Layers offers dependable options designed for both active days and laid-back moments. No matter who you’re shopping for, a well-made thermal underwear top is a timeless staple—one that brings warmth, comfort, and peace of mind when the temperature drops. From layering up for a brisk morning walk to staying cozy during a backyard gathering, these tops are built to handle whatever the season brings, making them a trusted companion for all your favorite fall and winter activities.