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Women's Thermal Underwear & Best Baselayer

Warm Baselayer Tops, Baselayer Pants & Women's Long Underwear

Our women’s long underwear is designed to keep you cozy and comfortable on outdoor adventures, even when the weather drops below freezing. Our women’s thermal underwear is made of special high-performance thermal fabric that not only maintains your body's heat, but also actually generates heat by absorbing and wicking away body moisture to keep you cozy and dry. Naturally insulating, our best baselayer clothing is breathable enough to prevent overheating. Our warm baselayer tops and pants are so warm and comfortable you’ll forget about the cold and focus on doing what you love.

Our women’s long underwear is designed to fit your body perfectly, because comfort is always our priority. When you choose our thermal long underwear to keep you warm doing the winter activities you love, you can be sure you’ll find them in our full range of sizes, made for plus, petite, regular, tall, petite plus, and tall plus bodies. We know the best baselayer clothing is versatile and easy to layer– try mixing and matching our silk baselayer tops and bottoms with our thermal long underwear for extra warmth on a ski trip, or wear them under jeans for a brisk walk around your neighborhood on a chilly fall day. Our warm baselayer tops and pants are so indispensable, we’re confident you’ll fall in love, Guaranteed. Period.® If you’re not satisfied with any item, simply return it to us at any time for an exchange or refund of its purchase price.

Bundle up in our women’s long underwear when the weather gets cold, because having the best baselayer clothing can mean the difference between creating a winter memory that’ll last a lifetime, and a cold, wet nightmare you’ll wish you could forget.

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  • Women's Silk Interlock Pants

    Women's Silk Interlock Pants

    Some days you just can’t shake the chill in the air. Whether you’re at home or at the office, silk longies add an extra layer of warmth. They’re super light so you won’t even realize you’re wearing them. A natural insulator, silk’s hollow fibers are the key to its warming power. Wonderfully soft, you’ll love the way it feels next to your skin.
    Item #512201-AE
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  • Women's Silk Interlock Tank

    Women's Silk Interlock Tank

    Silk longies are a super light layer that works under everything - even tailored clothing. A natural insulator, silk’s hollow fibers are the key to its warming power. It holds in body heat, plus wicks away moisture. Wonderfully soft, you’ll love the way it feels next to your skin.
    Item #512205-AE
    Color:
    $49.95
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  • Women's Silk Interlock Crewneck

    Women's Silk Interlock Crewneck

    Silk longies are a super light layer that works under everything - even tailored clothing. A natural insulator, silk’s hollow fibers are the key to its warming power. It holds in body heat, plus wicks away moisture. Wonderfully soft, you’ll love the way it feels next to your skin.
    Item #512199-AE
    Color:
    $59.95
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  • Women's Silk Interlock Scoopneck

    Women's Silk Interlock Scoopneck

    Silk longies are a super light layer that works under everything - even tailored clothing. A natural insulator, silk’s hollow fibers are the key to its warming power. It holds in body heat, plus wicks away moisture. Wonderfully soft, you’ll love the way it feels next to your skin.
    Item #512193-AE
    Color:
    $59.95
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      $59.95
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      $59.95
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  • Women's Silk Interlock Turtleneck

    Women's Silk Interlock Turtleneck

    If you’re always chilly at home or the office, this turtleneck is for you. A natural insulator, silk’s hollow fibers are the key to its warming power. It holds in body heat, plus wicks away moisture. It’s also incredibly light, super soft and layers neatly under shirts and sweaters. It’s a winter must have!   
    Item #512196-AE
    Color:
    $59.95
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  • Women's Plus Size Silk Interlock Pants

    Women's Plus Size Silk Interlock Pants

    Some days you just can’t shake the chill in the air. Whether you’re at home or at the office, silk longies add an extra layer of warmth. They’re super light so you won’t even realize you’re wearing them. A natural insulator, silk’s hollow fibers are the key to its warming power. Wonderfully soft, you’ll love the way it feels next to your skin.
    Item #512953-AE
    Color:
    $69.95
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      $69.95
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      $69.95
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      $69.95
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      $69.95
  • Women's Petite Silk Interlock Tank

    Women's Petite Silk Interlock Tank

    Silk longies are a super light layer that works under everything - even tailored clothing. A natural insulator, silk’s hollow fibers are the key to its warming power. It holds in body heat, plus wicks away moisture. Wonderfully soft, you’ll love the way it feels next to your skin.
    Item #512964-AE
    Color:
    $49.95
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    $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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      $49.95
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  • Women's Thermaskin Heat Pants

    Women's Thermaskin Heat Pants

    If it’s one thing Wisconsin winters have taught us, it’s that staying warm starts with a good base layer. Our Thermaskin™ Heat Pants not only provide an extra bit of warmth, they’re super soft and comfortable too. The high-performance fabric* actually generates heat by absorbing body moisture. It also wicks perspiration away from your skin, which is crucial for comfort in cold weather. *Heat technology is guaranteed for approximately 30 washes.  
    Item #512390-AE
    Color:
    $29.95
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      $29.95
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  • Women's Plus Size Thermaskin Heat Pants

    Women's Plus Size Thermaskin Heat Pants

    If it’s one thing Wisconsin winters have taught us, it’s that staying warm starts with a good base layer. Our Thermaskin™ Heat Pants not only provide an extra bit of warmth, they’re super soft and comfortable too. The high-performance fabric* actually generates heat by absorbing body moisture. It also wicks perspiration away from your skin, which is crucial for comfort in cold weather. *Heat technology is guaranteed for approximately 30 washes.  
    Item #512962-AE
    Color:
    $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
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      $34.95
    • 3X
      $34.95
  • Women's Base Layer Long Underwear Thermaskin Heat Turtleneck

    Women's Base Layer Long Underwear Thermaskin Heat Turtleneck

    If you're serious about the outdoors, you know the importance of a good base layer. This high-performance fabric* not only maintains your body's heat but actually generates heat by absorbing body moisture. It also wicks perspiration away from your skin, which is crucial for comfort in cold weather. Our Thermaskin™ Heat Turtleneck also has a touch of stretch to keep up with active pursuits. Wide cuffs help keep out cold.

    *Heat technology is guaranteed for approximately 30 washes.
    Item #404512-6X
    Color:
    $9.97 - $29.95
    $9.97 - $29.95
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      $9.97 $29.95
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      $9.97 $29.95
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      $9.97 $29.95
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      $9.97 $29.95
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      $9.97 $29.95
  • Women's Petite Silk Interlock Pants

    Women's Petite Silk Interlock Pants

    Some days you just can’t shake the chill in the air. Whether you’re at home or at the office, silk longies add an extra layer of warmth. They’re super light so you won’t even realize you’re wearing them. A natural insulator, silk’s hollow fibers are the key to its warming power. Wonderfully soft, you’ll love the way it feels next to your skin.
    Item #512959-AE
    Color:
    $59.95
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      $59.95
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      $59.95
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      $59.95
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      $59.95
    • L
      $59.95
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      $59.95
  • Women's Base Layer Long Underwear Thermaskin Pants

    Women's Base Layer Long Underwear Thermaskin Pants

    If you’re serious about the outdoors, you know the importance of a good base layer. This high-performance fabric* not only maintains your body’s heat but actually generates heat by absorbing body moisture. It also wicks perspiration away from your skin, which is crucial for comfort in cold weather. Our Thermaskin™ Heat Pants also have a touch of stretch to keep up with active pursuits. 

    *Heat technology is guaranteed for approximately 30 washes. 
    Item #502203-6X
    Color:
    $9.97 - $29.95
    $9.97 - $29.95
    Size: Please Select
    • XS
      $9.97 $29.95
    • S
      $9.97 $29.95
    • M
      $9.97 $29.95
    • L
      $9.97 $29.95
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    • XS
      $9.97 $29.95
    • S
      $9.97 $29.95
    • M
      $9.97 $29.95
    • L
      $9.97 $29.95

Our women’s long underwear is made for women who take comfort seriously, just like you.

When the weather gets cold, our women’s long underwear is designed to keep you warm, cozy and dry, whether you’re searching for the best pumpkin at the patch or building the best snowman in the neighborhood. Our thermal long underwear is lightweight enough to wear under jeans, yet warm enough to keep you comfortable in sub-zero temperatures. We’re proud to carry the best baselayer clothing in a wide range of fabrics and styles, from lightweight, breathable silk to soft, cozy merino wool. Try layering our warm thermal baselayer tops under your favorite sweater for a look that’s sure to keep you warm wherever the winter winds lead you.

Our women’s long underwear is made with the highest quality fabrics and designed to keep you comfortable and dry when the weather gets cold, whether you’re hitting the slopes or shoveling the snow off your sidewalk. Some of our thermal long underwear is made with high-performance Thermaskin™ fabric designed to maintain body heat and wick perspiration away from your skin, which is crucial for comfort in cold weather. The best baselayer clothing from natural materials uses silk and merino wool to naturally insulate your body from the cold. Our warm baselayer tops and bottoms are always made with the highest quality fabrics on the market, meaning you’ll stay just as warm and comfortable on the rink showing off your skating skills as you are curled up on the couch with a good book.

Our women’s long underwear is designed to be as multidimensional as you are. Our thermal long underwear comes in a variety of styles, from lightweight thermal camis to wear under a sweater when the office gets chilly, to high-tech Thermaskin™ pants to wick away moisture and keep you warm on the slopes. The best baselayer clothing is versatile enough to adjust as the weather changes. Layer our warm thermal baselayer tops under a fleece pullover for an early morning hike.

Our women’s long underwear is designed with real women like you in mind. We make sure our thermal long underwear is available in a full range of sizes for plus, petite, regular, tall, petite plus, and tall plus bodies, because the perfect body is the body you’re in. Once you’ve selected the baselayer clothing that’s right for you, make it your own by personalizing it with a unique monogram. We’re confident that our warm baselayer tops, bottoms, and long underwear will be the perfect base for all your cold weather outfits, Guaranteed. Period.® If you’re not satisfied with any item, simply return it to us at any time for an exchange or refund of its purchase price.
Products 1 - 12 of 52