How to Choose Base Layers
REI Co-op Lightweight Base Layer Long-Sleeve Crew Top - Women's
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Comfy as you warm up, comfy as you cool down, even comfy when you break a sweat—the women's REI Co-op lightweight long-sleeve base layer top is ideal for skiing, hiking and lunch break, too.
Shop similar products- Made of a soft polyester blend that wicks sweat and dries fast to keep you warm in winter and cool in summer
- Spandex in the blend gives the fabric 4-way stretch, while underarm gussets ensure you can reach and move with ease
- Flatseam construction is comfortable against your skin
- Lower back hem stays tucked when you stretch
- UPF 50+ sun protection
- Fitted
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
- Made in a Fair Trade Certified™ factory
Imported.
View all REI Co-op Women's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | T-shirt |
| Fabric | 92% polyester/8% spandex |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50 |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Lightweight |
| Sleeve Length | Long Sleeve |
| Gender | Women's |
| Sustainability | Fair Trade Certified™ factory From a Climate Label Certified brand |
REI Co-op Clothing - Women's
| XXS | XS | S | M | L | XL | 1X | 2X | 3X | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18W | 20W | 22W | 24W | 26W | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Numerical Size | 00 | 0-2 | 4-6 | 8-10 | 12-14 | 16 | 18 | 20-22 | 24-26 | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 |
| Bust | 31 | 32-33 | 34-35 | 36-37 | 38.5-40 | 41-42.5 | 43-45 | 47-49 | 51-53 | 32 | 33 | 34 | 35 | 36 | 37 | 38.5 | 40 | 42.5 | 45 | 47 | 49 | 51 | 53 |
| Sleeve Length | 29.5 | 30 | 30.5 | 31 | 31.5 | 32 | 32.5 | 33.5 | 34.5 | 30 | 30 | 30.5 | 30.5 | 31 | 31 | 31.5 | 31.5 | 32 | 32.5 | 33.5 | 33.5 | 34.5 | 34.5 |
| Waist | 24.5 | 25.5-26.5 | 27.5-28.5 | 29.5-30.5 | 32-33.5 | 34.5-36.5 | 37.5-39.5 | 40.5-42.5 | 44.5-46.5 | 25.5 | 26.5 | 27.5 | 28.5 | 29.5 | 30.5 | 32 | 33.5 | 36 | 38.5 | 40.5 | 42.5 | 44.5 | 46.5 |
| Hip | 34 | 35-36 | 37-38 | 39-40 | 41.5-43 | 44-46 | 47-49 | 50-52 | 54-56 | 35 | 36 | 37 | 38 | 39 | 40 | 41.5 | 43 | 45.5 | 48 | 50 | 52 | 54 | 56 |
| Inseam | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated. Size chart values represent body measurements, not garment measurements. 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, 1 inch shorter in body length, 1.25 inches shorter in sleeve length and ¾ inch shorter in total rise.
TALL: tall sizes are 3 inches longer in inseam, 2 inches longer in body length, 2.5 inches longer in sleeve length and 1.25 inches longer in total rise.
Capri or cropped pants have an intentionally shorter inseam—reference the technical specs instead of this chart.
Inseam is measured to the floor.
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Most Helpful Favorable Review
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outabout1 year ago
Very comfortable top and warm. I wore it camping last week in the mountains.
outabout
ID
60 people found this review helpful
Most Helpful Critical Review
Very different from prior generation
BlazeJester3 years ago
I purchased the prior version of this shirt a couple years ago, maybe 2 at most. The product description doesn’t make it clear that it’s different now and it’s impossible to tell from the photos. The prior version was a solid knit, similar to the mid weight. That one fits me beautifully and is very flattering, comfortable, basically like having nothing on. This newer version is nothing like it.
The photos capture it very poorly… the material has offset “vents” every 1/4” or so that are minimally threaded, rather than the entire fabric being the same thickness. It makes the material feel delicate like it might tear if snagged in the thinly woven spots, and it’s also a much rougher fabric on the skin. The shirt itself is a more snug fit so the perfect XL of the older shirt is now unflattering and tight. None of those changes is positive for me.
Hate that REI continues to discontinue great products that work well for tons of people. Product discontinuation in favor of what’s shiny is the most hated thing about shoe companies… it’s a bad bandwagon to be riding, REI.
BlazeJester
Longmont, CO, USA
46 people found this review helpful
Customer Images
Lisa
Seattle, WA
Sports short material as a top?
2 years ago
I ordered the REI Lightweigh Base Layer Crew in Rose Currant Heather and Purple Haze Heather, both a Large. I am returning both because the material is not great for normal wear, almost like basketball shorts material? It has holes throughout and is oddly shiny. And it looks ok in the photos but felt baggier than I like. I’m 5’6”, 37” bust, 30” waist, 45” hip and I think a medium would have fit better.
Age:35–44
Weight:150–175 lbs.
Height:5'6"
No, I do not recommend this product
Leah
Salt Lake City, UT
Love this shirt
5 years ago
I got this shirt specifically for a backpacking trip through the Grand Canyon as my hiking shirt. I was looking for sun protection with long sleeves but that could be work in 100+ degree heat 4 days in a row. This shirt was perfect. Was great in the heat and getting in the water whenever we could to cool down. Fits true to size.
1FootNsitE
North Puget Sound
Excellent Hour-Glass Cut
5 years ago
What stands out about this top compared to many others available is the longer length, tailoring in the waist, rounded hem, and plenty of room in bust. Fabric is soft and light. I bought this to work out in gym and it certainly works great for that. It does seem to wrinkle easily so pull it out of the wash machine right away and hang to dry. I paid full price and I feel for this type of top it is a bit pricey. The only color I really liked was the darker gray color. I wear 34F/G bra and bought the Large which was a good fit without being tight.
Yes , I recommend this product
hikesforchocolate
I rellay wanted to love it...
1 year ago
I liked the lightweight, breathable material and the raspberry color, but the fit was awkward, so I'm taking it back. I tried two sizes since my tall frame (5'9", 145lbs) makes women's sizes hard to predict. The medium was snug in the body and across the shoulders and the sleeves ended a full inch above my wrist. The large size was better in the sleeves but was sort of extra-large where the arms met the torso, which made the shirt pull and gape strangely between the chest and armpits. Both sizes were too long for my taste - I think that's the style now but it doesn't work for me for a fitness shirt.
Height:5'9"
Age:45–54
Weight:125–150 lbs.
AnnieG
Jersey Shore
Great fit for a tall person
4 years ago
I found this in the store and loved the fit. I'm 5'9" and 122 lbs so I have a hard time finding the right proportions of long and narrow. My regular clothing size is a XS but I went with the S to get the extra length and shoulder width. It is rare for me to find a top that is long enough to stay tucked in or not expose my back if untucked. It fits well around the arms and shoulders, too, not bunching up in the armpits. I bought the gray. I find the other colors kinda weird and wish they made it in different/more colors because I would buy several of them if they did.
Height:5'9"
Age:45–54
Weight:100–125 lbs.
Yes , I recommend this product
BlazeJester
Longmont, CO, USA
Very different from prior generation
3 years ago
I purchased the prior version of this shirt a couple years ago, maybe 2 at most. The product description doesn’t make it clear that it’s different now and it’s impossible to tell from the photos. The prior version was a solid knit, similar to the mid weight. That one fits me beautifully and is very flattering, comfortable, basically like having nothing on. This newer version is nothing like it. The photos capture it very poorly… the material has offset “vents” every 1/4” or so that are minimally threaded, rather than the entire fabric being the same thickness. It makes the material feel delicate like it might tear if snagged in the thinly woven spots, and it’s also a much rougher fabric on the skin. The shirt itself is a more snug fit so the perfect XL of the older shirt is now unflattering and tight. None of those changes is positive for me. Hate that REI continues to discontinue great products that work well for tons of people. Product discontinuation in favor of what’s shiny is the most hated thing about shoe companies… it’s a bad bandwagon to be riding, REI.
Age:35–44
Weight:175–200 lbs.
Height:5'8"
No, I do not recommend this product
Casey
Salt Lake City, UT
Best base layer ever!
1 year ago
This has been my go-to base layer for skiing for two seasons, and it can't be beat. This is my third time purchasing since I loved my first purchase so much. I generally wear this top under a micro-grid fleece and my shell and am plenty warm and dry. The cut is super flattering (fitted without limiting movement or being too tight in the wrong places) and I love the color options and the addition of new ones each season. This base is great at wicking moisture, and I never feel super sweaty or gross after skiing. Personally, I tend to run hot so this base plus a fleece is perfect for me. I also just wear it casually out under a vest in cool weather. I'd highly recommend it for your base layer needs this winter.
Age:25–34
Weight:125–150 lbs.
Height:5'6"
Yes , I recommend this product
SParris
New favorite hiking shirt!
4 years ago
Purchased this to take on a trip to UT to see Canyonlands and Arches National Parks. True to size and long (which I like!). This is the perfect long sleeve layer under a vest or jacket! Thanks REI!
Age:25–34
Weight:125–150 lbs.
Height:5'5"
Yes , I recommend this product
Balticat
Baltimore MD
Nice material, terrible cut
3 years ago
Very strange fit. I went up a size and got a large and it's fine on top but very narrow through the hips. The cut is very long and goes below my butt, so the tightness around the hips is more exaggerated and awkward. I suppose if its a shirt you plan to always tuck in or have narrow hips, this wouldn't be a problem but it's not going to work for me. It's unfortunate because the material seems nice and lightweight and was what I was looking for as a transitional season top.
Age:35–44
Weight:125–150 lbs.
Height:5'5"
Active gal
Great top
4 years ago
I am 5'3", 125 lbs and bought several in medium. It just covers the tush (which I like). Wear them as tops (medium for me is loser fitting, though not baggy, sloppy lose), or base layer with vest or jacket etc. If one prefers a more body fitting base layer, perhaps order small. It has a nice design, more fitting at the top (so ya don't look frumpy) with minimal flare (though not too much) at the lower body. I am slender though lift weights so muscular.
Height:5'3"
Age:45–54
Weight:100–125 lbs.
Yes , I recommend this product
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