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Men's Long Thermal Underwear & Base Layers

Thermal Underwear Pants, Base Layer Shirts & Long Underwear Shirts

Our men’s long underwear will you keep you warm and cozy when temperatures start to drop this winter, whether you’re hitting the slopes or shoveling your driveway. Our insulating thermal underwear does double duty by keeping you both warm and dry, so you can maintain your active lifestyle without letting cold temperatures throw off your schedule. Our silk base layers are the perfect effortless insulating layer to throw on under casual flannels or cords for everyday comfort and warmth, because they’re lightweight and breathable enough to prevent you from overheating once you step inside. Our long underwear shirts and pants are thoughtfully constructed for maximum durability and comfort, because nobody wants to wear scratchy, worn-out long underwear under their carefully selected fall outfits.

Our men’s long underwear is made with only the best insulating materials to keep out moisture and cold, because when it comes to staying warm in extreme temperatures, quality is key. Our silk thermal underwear is made with an interlock knit, so it’s much denser than ordinary jersey knits for maximum warmth. Our Thermaskin™ base layers utilize special high-performance technology that not only maintains your body's heat, but actually generates heat by absorbing body moisture. Our thermal long underwear shirts and pants are available in a wide range of styles and materials, whether you wear regular or tall sizes. Try making yours extra special by personalizing them with a custom monogram in the font and placement of your choosing.

Our men’s long underwear is designed to effortlessly move with your body, whether you’re cross-country skiing on a frozen tundra or building the best snow fort on the block. Our thermal underwear is insulating to keep you warm when temperatures drop below zero, but it’s also very breathable, so you won’t overheat once you step inside.

Products 1 - 12 of 18
  • Men's Stretch Thermaskin Long Underwear Pant Base Layer

    Men's Stretch Thermaskin Long Underwear Pant Base Layer

    If there’s one thing we’ve learned from Wisconsin winters, it’s that you don’t skip your base layer. That extra bit of warmth can be the difference between feeling mildly annoyed by the cold ... and feeling like you just got hit by an ice-nado. More than just feeling warm, though, we want you to be comfortable. So we developed a fabric that’s significantly stretchier than the stuff we’ve offered in the past. The extra give provides a more natural, flexible feel that makes it virtually disappear. And since the last thing you want to be is damp when it’s cold, Thermaskin™ technology pulls moisture away from your skin to keep you comfortably dry, too. This is one base layer you don’t want to skip.
    Item #501209-A7
    Color:
    $44.95
    $44.95
    $44.95
    $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
  • Men's Silk Interlock Pants

    Men's Silk Interlock Pants

    Silk is light, layerable and one of nature’s best insulators. It’s also very breathable, so you won’t overheat once you step inside. Lands’ End® silk is made with an interlock knit, so it’s much denser than ordinary jersey knits. Silk Pants have a brushed elastic waist and rib-knit cuffs.
    Item #501670-A7
    Color:
    $59.95
    $59.95
    $59.95
    Size: Please Select
    • S
      $59.95
    • M
      $59.95
    • L
      $59.95
    • XL
      $59.95
    • XXL
      $59.95
    Size: Please Select
    • S
      $59.95
    • M
      $59.95
    • L
      $59.95
    • XL
      $59.95
    • XXL
      $59.95
    Size: Please Select
    • S
      $59.95
    • M
      $59.95
    • L
      $59.95
    • XL
      $59.95
    • XXL
      $59.95
  • Men's Silk Interlock Crew

    Men's Silk Interlock Crew

    Silk is lightweight and one of nature’s best insulators. So this crew is great for layering under sweaters, shirts, flannels, you name it. It also wicks perspiration away from your skin, helping maintain your body’s heat, which is crucial for comfort in cold weather. 
    Item #501676-A7
    Color:
    $59.95
    $59.95
    $59.95
    Size: Please Select
    • S
      $59.95
    • M
      $59.95
    • L
      $59.95
    • XL
      $59.95
    • XXL
      $59.95
    Size: Please Select
    • S
      $59.95
    • M
      $59.95
    • L
      $59.95
    • XL
      $59.95
    • XXL
      $59.95
    Size: Please Select
    • S
      $59.95
    • M
      $59.95
    • L
      $59.95
    • XL
      $59.95
    • XXL
      $59.95
  • Men's Stretch Thermaskin Long Underwear Crew Base Layer

    Men's Stretch Thermaskin Long Underwear Crew Base Layer

    If there’s one thing we’ve learned from Wisconsin winters, it’s that you don’t skip your base layer. That extra bit of warmth can be the difference between feeling mildly annoyed by the cold ... and feeling like you just got hit by an ice-nado. More than just feeling warm, though, we want you to be comfortable. So we developed a fabric that’s significantly stretchier than the stuff we’ve offered in the past. The extra give provides a more natural, flexible feel that makes it virtually disappear. And since the last thing you want to be is damp when it’s cold, Thermaskin™ technology pulls moisture away from your skin to keep you comfortably dry, too. This is one base layer you don’t want to skip.
    Item #501208-A7
    Color:
    $44.95
    $44.95
    $44.95
    $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
    Size: Please Select
    • S
      $44.95
    • M
      $44.95
    • L
      $44.95
    • XL
      $44.95
    • XXL
      $44.95
  • Men's Tall Silk Interlock Pants

    Men's Tall Silk Interlock Pants

    Silk is light, layerable and one of nature’s best insulators. It’s also very breathable, so you won’t overheat once you step inside. Lands’ End® silk is made with an interlock knit, so it’s much denser than ordinary jersey knits. Silk Pants have a brushed elastic waist and rib-knit cuffs.
    Item #501670-A7
    Color:
    $59.95
    $59.95
    $59.95
    Size: Please Select
    • M
      $64.95
    • L
      $64.95
    • XL
      $64.95
    • XXL
      $64.95
    Size: Please Select
    • M
      $64.95
    • L
      $64.95
    • XL
      $64.95
    • XXL
      $64.95
    Size: Please Select
    • M
      $64.95
    • L
      $64.95
    • XL
      $64.95
    • XXL
      $64.95
  • Men's Tall Stretch Thermaskin Long Underwear Pant Base Layer

    Men's Tall Stretch Thermaskin Long Underwear Pant Base Layer

    If there’s one thing we’ve learned from Wisconsin winters, it’s that you don’t skip your base layer. That extra bit of warmth can be the difference between feeling mildly annoyed by the cold ... and feeling like you just got hit by an ice-nado. More than just feeling warm, though, we want you to be comfortable. So we developed a fabric that’s significantly stretchier than the stuff we’ve offered in the past. The extra give provides a more natural, flexible feel that makes it virtually disappear. And since the last thing you want to be is damp when it’s cold, Thermaskin™ technology pulls moisture away from your skin to keep you comfortably dry, too. This is one base layer you don’t want to skip.
    Item #501209-A7
    Color:
    $44.95
    $44.95
    $44.95
    $44.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
  • Men's Silk Interlock Turtleneck

    Men's Silk Interlock Turtleneck

    This great fabric makes them perfect under sweaters, flannels, you name it. Silk is light, layerable and one of nature’s best insulators. It’s also very breathable, so you won’t overheat once you step inside. Lands’ End® silk is made with an interlock knit, so it’s up to 30% denser, warmer than ordinary jersey knits. This Turtleneck has long sleeves and tails long enough to stay tucked in.
    Item #501680-A7
    Color:
    $59.95
    Size: Please Select
    • M
      $59.95
    • L
      $59.95
    • XL
      $59.95
  • Men's Stretch Thermaskin Long Underwear Mock Neck Base Layer

    Men's Stretch Thermaskin Long Underwear Mock Neck Base Layer

    If there’s one thing we’ve learned from Wisconsin winters, it’s that you don’t skip your base layer. That extra bit of warmth can be the difference between feeling mildly annoyed by the cold ... and feeling like you just got hit by an ice-nado. More than just feeling warm, though, we want you to be comfortable. So we developed a fabric that’s significantly stretchier than the stuff we’ve offered in the past. The extra give provides a more natural, flexible feel that makes it virtually disappear. And since the last thing you want to be is damp when it’s cold, Thermaskin™ technology pulls moisture away from your skin to keep you comfortably dry, too. This is one base layer you don’t want to skip.
    Item #501207-A7
    Color:
    $49.95
    $49.95
    $49.95
    $49.95
    Size: Please Select
    • S
      $49.95
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • S
      $49.95
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • S
      $49.95
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • S
      $49.95
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
  • Men's Tall Stretch Thermaskin Long Underwear Crew Base Layer

    Men's Tall Stretch Thermaskin Long Underwear Crew Base Layer

    If there’s one thing we’ve learned from Wisconsin winters, it’s that you don’t skip your base layer. That extra bit of warmth can be the difference between feeling mildly annoyed by the cold ... and feeling like you just got hit by an ice-nado. More than just feeling warm, though, we want you to be comfortable. So we developed a fabric that’s significantly stretchier than the stuff we’ve offered in the past. The extra give provides a more natural, flexible feel that makes it virtually disappear. And since the last thing you want to be is damp when it’s cold, Thermaskin™ technology pulls moisture away from your skin to keep you comfortably dry, too. This is one base layer you don’t want to skip.
    Item #501208-A7
    Color:
    $44.95
    $44.95
    $44.95
    $44.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
    Size: Please Select
    • M
      $49.95
    • L
      $49.95
    • XL
      $49.95
    • XXL
      $49.95
  • Men's Thermaskin Heat Crew

    Men's Thermaskin Heat Crew

    Anyone who spends a lot time outdoors in the winter knows a good base layer is crucial for comfort in cold weather. This high-performance fabric* not only traps your body’s heat but actually generates heat by absorbing body moisture. It also wicks perspiration away from your skin to the outer surface of the garment so you stay dry underneath. Our Midweight Thermaskin™ Heat Crew also has plenty of give to keep up with active pursuits.

    *Heat technology is guaranteed for approximately 30 washes.
    Item #419952-8M
    Color:
    $14.97 - $39.95
    Size: Please Select
    • L
      $14.97 $39.95
  • Men's Tall Silk Interlock Crew

    Men's Tall Silk Interlock Crew

    Silk is lightweight and one of nature’s best insulators. So this crew is great for layering under sweaters, shirts, flannels, you name it. It also wicks perspiration away from your skin, helping maintain your body’s heat, which is crucial for comfort in cold weather. 
    Item #501676-A7
    Color:
    $59.95
    $59.95
    $59.95
    Size: Please Select
    • M
      $64.95
    • L
      $64.95
    • XL
      $64.95
    • XXL
      $64.95
    Size: Please Select
    • M
      $64.95
    • L
      $64.95
    • XL
      $64.95
    • XXL
      $64.95
    Size: Please Select
    • M
      $64.95
    • L
      $64.95
    • XL
      $64.95
    • XXL
      $64.95
  • Men's Tall Stretch Thermaskin Long Underwear Mock Neck Base Layer

    Men's Tall Stretch Thermaskin Long Underwear Mock Neck Base Layer

    If there’s one thing we’ve learned from Wisconsin winters, it’s that you don’t skip your base layer. That extra bit of warmth can be the difference between feeling mildly annoyed by the cold ... and feeling like you just got hit by an ice-nado. More than just feeling warm, though, we want you to be comfortable. So we developed a fabric that’s significantly stretchier than the stuff we’ve offered in the past. The extra give provides a more natural, flexible feel that makes it virtually disappear. And since the last thing you want to be is damp when it’s cold, Thermaskin™ technology pulls moisture away from your skin to keep you comfortably dry, too. This is one base layer you don’t want to skip.
    Item #501207-A7
    Color:
    $49.95
    $49.95
    $49.95
    $49.95
    Size: Please Select
    • M
      $54.95
    • L
      $54.95
    • XL
      $54.95
    • XXL
      $54.95
    Size: Please Select
    • M
      $54.95
    • L
      $54.95
    • XL
      $54.95
    • XXL
      $54.95
    Size: Please Select
    • M
      $54.95
    • L
      $54.95
    • XL
      $54.95
    • XXL
      $54.95
    Size: Please Select
    • M
      $54.95
    • L
      $54.95
    • XL
      $54.95
    • XXL
      $54.95

Try our silk men’s long underwear for light, buildable base layers made from one of nature’s best insulators.

Our thermal underwear is made with high-performance fabric that not only maintains your body's natural heat, but actually generates heat by absorbing and wicking away body moisture, to keep you happily cozy and dry for hours. Our Thermaskin™ thermal underwear is a favorite for everyone from high-performance athletes to dads who are super committed to beating their kids in extra-long snowball fights. Having cozy, insulating base layers is absolutely essential to staying warm when you live in a cold climate, even if the only mountain you plan to climb this winter is the neighborhood sledding hill. Our warm long underwear pants and shirts are made with only the finest materials and highest-quality construction, so they’re durable enough to keep helping you handle winter’s worst for years to come.

Our men’s long underwear is available in breathable, lightweight styles that fit comfortably under your pants, so you can easily slip them on, even if you’re not going far from home (after all, why sacrifice warmth and comfort, even for a minute?) Try our thermal underwear in silk for an extra-luxurious comfort experience – silk is nature’s finest insulator, and it’s super breathable, so you won’t overheat when you step inside for a hot cocoa break. Our Thermaskin™ base layers are ideal for active outdoor adventures like skiing and snowboarding where you’re making direct contact with snow and slush, because they utilize innovative moisture-wicking technology that keeps you dry even after hours of exposure. Our warm long underwear shirts and pants are a must when the weather gets cold, because that extra bit of warmth can be the difference between creating a winter memory that’ll last a lifetime, and a cold, wet nightmare you’ll wish you could forget.

Creating the best men’s long underwear is all about choosing the right fabrics. That’s why our underwear is made with high-performance Thermaskin™, naturally insulating silk, and soft merino. Our Thermaskin™ thermal underwear is specially designed to pull moisture away from your skin to keep you comfortably dry, because the last thing you want in icy temperatures is to be damp. If you prefer natural base layers, you’ll love our silk or merino wool long underwear: Silk is surprisingly warm and insulating for such a lightweight fabric, and our Thermaskin™ natural merino wool is precisely blended with nylon to wick perspiration away from your skin and help maintain your body’s delicate microclimate of heat. From thermal long underwear shirts to silk long underwear pants, all our men’s long underwear is made with only the highest quality materials available, because quality fabric is key to creating effective base layers for the coldest weather.

Our men’s long underwear is a must when temperatures begin to drop this year, because if there’s one thing icy Wisconsin winters have taught us, it’s the importance of a great base layer. Finding comfortable long underwear is all about getting the perfect fit, which is why ours is available in both regular and tall sizes, so you’ll never have chilly, unprotected ankles or wrists. For unique base layers you’ll love wearing for years, try personalizing your long underwear with a unique monogram or embroidered icon. We’re confident our cozy long underwear shirts and pants will keep you cozy and warm on all your adventures this winter.  
Products 1 - 12 of 18