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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.

Products 1 - 12 of 44
  • Women's Base Layer Long Underwear Thermaskin Heat Pants

    Women's Base Layer Long Underwear Thermaskin Heat 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. Styled with an easy elastic waist, plus wide cuffs to help seal out cold.

    *Heat technology is guaranteed for approximately 30 washes. 
    Item #404509-6P
    Color:
    $12.97 - $29.95
    $12.97 - $29.95
    $12.97 - $29.95
    $12.97 - $29.95
    $12.97 - $29.95
    Size: Please Select
    • XS
      $17.97 $29.95
    • M
      $17.97 $29.95
    • L
      $17.97 $29.95
    • XL
      $17.97 $29.95
    Size: Please Select
    • M
      $12.97 $29.95
    Size: Please Select
    • XS
      $17.97 $29.95
    • S
      $17.97 $29.95
    • M
      $17.97 $29.95
    • L
      $17.97 $29.95
    • XL
      $17.97 $29.95
    Size: Please Select
    • S
      $15.97 $29.95
    • M
      $15.97 $29.95
    Size: Please Select
    • XS
      $17.97 $29.95
  • Women's Thermaskin Long Underwear Crew Base Layer

    Women's Thermaskin Long Underwear Crew Base Layer

    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 Crewneck also has a touch of stretch to keep up with active pursuits. Wide cuffs keep cold from sneaking in.

    *Heat technology is guaranteed for approximately 30 washes.
    Item #404515-6P
    Color:
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    Size: Please Select
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
  • Women's Base Layer Long Underwear Silk Tank Top

    Women's Base Layer Long Underwear Silk Tank Top

    Silk is a comfortable first layer — indoors or out — because of its lightweight warmth and moisture-wicking ability. The pretty pointelle pattern knit into the fabric adds a hint of sophistication, making this top especially suited to wear under business or dress clothing. Or wear it anytime you want to feel extra pretty.
    Item #404535-6P
    Color:
    $19.97 - $44.95
    $19.97 - $44.95
    Size: Please Select
    • XS
      $19.97 $44.95
    • S
      $19.97 $44.95
    • M
      $19.97 $44.95
    • L
      $19.97 $44.95
    • XL
      $19.97 $44.95
    Size: Please Select
    • XS
      $19.97 $44.95
  • Women's Merino Base Layer Long Underwear Thermaskin Crew

    Women's Merino Base Layer Long Underwear Thermaskin Crew

    Your winter might be inside or outside, active or relaxing. Thermaskin™ Natural gives you the best of all possible worlds: warmth and wicking that’s designed to move when you give the nod. It blends smooth nylon and natural merino wool for thermal perfection.
    Item #471162-6P
    Color:
    $39.97 - $69.95
    $39.97 - $69.95
    Size: Please Select
    • XS
      $39.97 $69.95
    • S
      $39.97 $69.95
    • M
      $39.97 $69.95
    • L
      $39.97 $69.95
    • XL
      $39.97 $69.95
    Size: Please Select
    • XL
      $39.97 $69.95
  • Women's Thermaskin Heat Lace Crew

    Women's Thermaskin Heat Lace Crew

    Whether you’re winter’s number one fan or just need a little extra something in the office or at home, staying warm starts with a good base layer, like our Thermaskin™ Heat Crew. Its 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.

    *Heat technology is guaranteed for approximately 30 washes.
    Item #491241-6P
    Color:
    $19.97 - $34.95
    Size: Please Select
    • S
      $19.97 $34.95
    • M
      $19.97 $34.95
    • L
      $19.97 $34.95
    • XL
      $19.97 $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 #404512-6P
    Color:
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    $14.97 - $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XL
      $14.97 $29.95
    Size: Please Select
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • S
      $14.97 $29.95
    • M
      $14.97 $29.95
    • XL
      $14.97 $29.95
  • Women's Merino Base Layer Long Underwear Thermaskin Pants

    Women's Merino Base Layer Long Underwear Thermaskin Pants

    Your winter might be inside or outside, active or relaxing. Thermaskin Natural gives you the best of all possible worlds: warmth and wicking that’s designed to move when you give the nod. It blends smooth nylon and natural merino wool for thermal perfection.
    Item #471165-6P
    Color:
    $39.97 - $69.95
    Size: Please Select
    • M
      $39.97 $69.95
  • Women's Merino Base Layer Long Underwear Thermaskin Turtleneck

    Women's Merino Base Layer Long Underwear Thermaskin Turtleneck

    Your winter might be inside or outside, active or relaxing. Thermaskin Natural gives you the best of all possible worlds: warmth and wicking that’s designed to move when you give the nod. It blends smooth nylon and natural merino wool for thermal perfection.
    Item #473171-6P
    Color:
    $39.97 - $69.95
    $39.97 - $69.95
    Size: Please Select
    • XS
      $39.97 $69.95
    • S
      $39.97 $69.95
    • M
      $39.97 $69.95
    • L
      $39.97 $69.95
    • XL
      $39.97 $69.95
    Size: Please Select
    • M
      $39.97 $69.95
    • L
      $39.97 $69.95
    • XL
      $39.97 $69.95
  • Women's Thermaskin Heat Lace Cami

    Women's Thermaskin Heat Lace Cami

    Need a little extra something in the office or at home? Staying warm starts with a good base layer. Our Thermaskin™ Heat Cami is made of a high-performance fabric* that not only maintains your body’s heat but actually generates heat by absorbing body moisture.

    *Heat technology is guaranteed for approximately 30 washes.
    Item #491238-6P
    Color:
    $14.97 - $24.95
    Size: Please Select
    • S
      $14.97 $24.95
    • XL
      $14.97 $24.95
  •  Women's Plus Size Silk Base Layer Long Underwear Crew

    Women's Plus Size Silk Base Layer Long Underwear Crew

    It's so lightweight you'll forget you're wearing it. But fortunately, you'll remember how comfortable you feel. As a natural insulator, silk helps hold in body heat, plus wicks away moisture. It's breathable too, so you won't overheat.
    Item #404530-6P
    Color:
    $29.97 - $64.95
    $29.97 - $64.95
    $29.97 - $64.95
    Size: Please Select
    • 2X
      $29.97 $64.95
    • 3X
      $29.97 $64.95
    Size: Please Select
    • 3X
      $29.97 $64.95
    Size: Please Select
    • 3X
      $29.97 $64.95
  • Women's Petite Base Layer Long Underwear Thermaskin Heat Pants

    Women's Petite Base Layer Long Underwear Thermaskin Heat 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. Styled with an easy elastic waist, plus wide cuffs to help seal out cold.

    *Heat technology is guaranteed for approximately 30 washes. 
    Item #404509-6P
    Color:
    $12.97 - $29.95
    $12.97 - $29.95
    $12.97 - $29.95
    Size: Please Select
    • XS
      $14.97 $29.95
    • M
      $14.97 $29.95
    • L
      $14.97 $29.95
    • XL
      $14.97 $29.95
    Size: Please Select
    • XS
      $17.97 $29.95
    Size: Please Select
    • XS
      $17.97 $29.95
  • Women's Petite Base Layer Long Underwear Silk Scoopneck Top

    Women's Petite Base Layer Long Underwear Silk Scoopneck Top

    If you're always chilly at home or the office, this top is for you. It's soft on the skin and layers neatly under shirts or turtlenecks. It's also breathable so you won't overheat. The pretty pointelle pattern knit into the fabric adds a hint of sophistication, making this top especially suited to wear under business or dress clothing. Or wear it anytime you want to feel extra pretty.
    Item #404543-6P
    Color:
    $29.97 - $54.95
    $29.97 - $54.95
    Size: Please Select
    • XS
      $29.97 $54.95
    • S
      $29.97 $54.95
    • M
      $29.97 $54.95
    • L
      $29.97 $54.95
    • XL
      $29.97 $54.95
    Size: Please Select
    • XS
      $29.97 $54.95
    • S
      $29.97 $54.95

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 44