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  • Made of a durable yet soft polyester / spandex blend fabric that wicks sweat and dries fast
  • Flatseam construction, raglan sleeves and side gussets are comfortable as you move
  • Extended back hem stays tucked in when you lean forward
  • UPF 50 sun protection
  • Fitted


View all REI Co-op Women's Long Underwear Tops

REI membership


Best Use Multisport
Shirt Style Crew
Fabric 89% Polyester / 11% Spandex
Sun-Protective Fabric Yes
UPF Rating 50
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Midweight
Sleeve Length Long Sleeve
Gender Women's

Size chart

Sizing notes

Some women's pants are available in petite and tall sizes. Typically petite sizes fit women 4'11" to 5'3". Regular sizes fit women 5'4" to 5'8". Tall sizes fit women 5'9" to 5'11". PETITE: Generally, as compared to regular sizes, petite sizes are 2.5 inches shorter in inseam and ¾ inch shorter in total rise. TALL: tall sizes are 3 inches longer in inseam and 1 inch longer in total rise.

Rated 5 out of 5 by from Fits well, warm I wore this under a fleece last weekend while camping in Northern Colorado. It was great on a chilly night and is true to size.
Date published: 2016-09-12
Rated 5 out of 5 by from Great alternative to wool! Tried on smart wool after smart wool hoping one would one have a quality great enough to overcome my sensitive, fair skin. No such luck. Everything itched. Then I found this top and haven't looked back! I've since bought an additional one in a different color. I plan on using this top for our JMT hike this August! Definitely recommend this to anyone who's had an issue with wool!
Date published: 2017-03-27
Rated 5 out of 5 by from Very cozy, warm, & stylish I bought this about a month ago for skiing as a base layer and it was AMAZING! So warm and even looked great just wearing around town or around our cabin. Would definitely recommend!
Date published: 2017-02-02
Rated 5 out of 5 by from So much range in motion! I bought this a month ago for a trip to Zion NP...plans changed and went to Joshua Tree instead. From high canyons to dessert, this base layer was still clutch! It's stretchy, gave great coverage and made hiking extremely comfortable. Wore it 2-3 days in a row and didn't hold a smell. Haven't tested it in wet conditions, but it past windy desert conditions :)
Date published: 2017-04-11
Rated 4 out of 5 by from Kept me warm It helped keep me warm in below freezing weather in Colorado.
Date published: 2017-04-28
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How much does this weigh?

Asked by: thruhikergirl
​The weight of this mid-weight top is 9.5 ounces.
Answered by: REIservice
Date published: 2017-02-20

Is this a good alternative to the merino wool as a base layer? I usually find wool to be too itchy. Thanks

​If you find merino wool to be too itchy, this polyester mid-weight top is a good alternative.
Answered by: REIservice
Date published: 2017-01-17
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