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  • Capilene Thermal Weight provides the greatest warmth and breathability of any Patagonia base layer
  • Polartec® Power Grid® fabric is soft, stretchy and compressible with a smooth outer face
  • Super-warm brushed micro-grid fleece interior wicks away moisture
  • Spandex for stretch and ease of movement
  • Capilene Thermal Weight is bluesign® approved and has 30 - 100% recycled content
  • Treated with Polygiene® permanent odor control
  • Long center-front zipper for venting
  • Internal neck tape for comfort; locker loop for hang-drying
  • Offset shoulder seams eliminate chafing under pack straps
  • Full underarm gusset for range of motion
  • Smooth flatlock seams; droptail hem
  • Elastic thumbholes


View all Patagonia Women's Long Underwear Tops

REI membership


Best Use Multisport
Shirt Style Zip-front
Fabric 92% recycled polyester/8% spandex
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Heavyweight
Sleeve Length Long Sleeve
Thumbholes Yes
Gender Women's

Size chart

Sizing notes

Inseam varies depending on style. Measurements are stated in inches unless otherwise indicated.

Rated 5 out of 5 by from Super warm!! I tried on a lot of different base layers in the store today, and I am looking for something that is super thin that will keep me warm outside all day while traveling overseas but without the bulk. I want it for temperatures in the 30s and 40s, I get really cold easily so I opted for a heavyweight base layer, and this one is perfect. I plan to wear it alone or under fleece and fleece lined wind stopper jacket (North Face). I liked it so much that I ordered two others to be shipped to me as there was only one in my size in the store.
Date published: 2016-01-10
Rated 5 out of 5 by from Toasty and lightweight So lightweight, yet toasty warm. I purchased both the top and bottoms. I was amazed when I put them on. I wear a woman's XL and they fit great, if not a bit roomy. I've had them on all day, both outside in Michigan cold and inside. Don't want to take them off!
Date published: 2016-01-21
Rated 5 out of 5 by from warm and snug This thermal is soft and snug and very warm. Oddly enough, a friend bought me the matching fleece for Christmas, so I have the perfect pair. This is a very good, helpful piece of clothing for places that are cold so you can wear it to stay warm indoors, but it also breathes, so you can wear it outdoors hiking, walking, skiing, whatever, in the cold, but not get clammy cold.
Date published: 2017-01-11
Rated 5 out of 5 by from Great base layer Perfect weight, very comfortable-not too tight, but fits under other layers
Date published: 2016-01-09
Rated 5 out of 5 by from Love love love Very comfortable, warm but so light!! Looks really nice too. I would definitely recommend. Fits true to size too
Date published: 2016-03-03
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