REI Co-op Swiftland Thermal Running Crew Pullover - Women's
Perfect for crisp days when you don't want to start cold—or overheat after a mile—the women's REI Co-op Swiftland Thermal Running Crew's grid-back fleece is warm yet allows excess heat to dissipate.
Key Details






- This pullover can be worn next to skin, but it really shines as an adaptable mid or last layer
- Lightweight grid-back fleece is warm yet allows excess heat to dissipate, preventing moisture buildup that can quickly bring body temperature down and ruin a run
- Made with yarn that uses LanzaTech carbon-capture technology
- LanzaTech is a biochemistry company that's developed technology to capture carbon emissions from industrial sites, such as steel mills, before they enter the atmosphere
- These carbon-rich gases are then converted into ethanol, which can be used to manufacture new materials like polyester
- Underarm gussets for ease of movement
- Fold-over cuff mitts and thumbholes let you adjust coverage to match conditions
- Secure zippered pocket at side hem for your keys or card
- Curved hem with extended back coverage
- Reflective details
- Locker loop
- Back length: 25.25 in.
- Machine wash cold; do not use bleach or fabric softeners; tumble dry low
- 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
- Contains materials that meet the bluesign® criteria
Imported.
View the REI Co-op Swiftland Product LineView all REI Co-op Women's T-Shirts| Best Use | Running Trail Running Fitness |
|---|---|
| Shirt Type | T-shirt |
| Fabric | 63% recycled polyester/28% LanzaTech polyester/9% spandex (bluesign approved) |
| Moisture Wicking | Yes |
| Sleeve Length | Long Sleeve |
| Hood | No |
| Thumbholes | Yes |
| Gender | Women's |
| Weight | 8.5 ounces |
| Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials From a Climate Label Certified brand |
Fits slightly large based on reviews
| 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.
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.


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Most Helpful Critical Review
Must Have
In preparation for cooler weather, I wanted a slightly thicker than your typical running long sleeve and this fit the bill perfectly. It kept me warm during a 39 degree weather run without being hot. I wore a short sleeve underneath and it was a perfect layering combo. I am 160# 5’2” and a large was the perfect fit. It covered the tummy without it being too long and it’s not a slim fit like most women running tops are. Even with a short sleeve underneath, this top still room. This is a very comfortable top and worth every penny. Will end up buying another for rotation.
Great shirt but weird fit
Found this shirt on the clearance rack in my local REI store. Loved the material and the color, however I could not tolerate the shortness of the sleeves with my thumbs in the thumbholes (my main purpose for the shirt), and I could not tolerate how tight it was in the front of my neck (I kept tugging at it). I am an average sized 5'6" frame, like I don't have exceptionally long. arms or neck or anything. Maybe this would better fit someone who is more petite.
Warm, comfy, and breathable
This top is great for keeping you warm, but not too hot. Breathable fabric keeps you dry. The length of the sleeves is a little short. There is a side pocket at the hip, which is great for carrying lightweight items.
Not designed for women
This running shirt claims to be sized for “women” but definitely isn’t shaped for women. There’s no stretch, limited room in the bust, and is definitely “unisex” at best. The thumb holes are nice and the “cuff” handwarmer is a good idea but implementation leaves a little to be desired and honestly I’d prefer a watch opening in the sleeve for checking my pace during the run instead of having to take my thumb out and pull the whole sleeve back to see how I’m doing. The inside is soft, but the lack of stretch and boxiness of the fit really detract from the quality unfortunately. I can barely pull up my sleeves because there's no stretch in the sleeve where the cuff meets the arm.
Great running top
Recently bought this for trail running in cooler weather. Overall I really like this top. It was about 30 degrees on my run and I wore this top without any layers. It kept me warm without overheating. Only complaint is the neck line could be looser. If you are between sizes would recommend sizing up.
Good quality base layer, but sleeves too short!
The quality of this fabric is nice, with the waffled interior texture. Cut is great through the body, and the small zippered pocket near the waist is a nice touch, though it would be even nicer if it were large enough to hold a phone. The reason for 4 stars instead of 5 is because the sleeves are way too short. I have another REI running shirt with the same sleeve feature: a cuff that is meant to go over your hand and a slit for the thumb. It works really well on my first shirt, but it's completely unusable on this one. In order to pull the sleeve down far enough that the cuff goes over my hand, it pulls the neck and shoulder to the point of stressing the fabric and making the neck opening twice as large as it is when not stretched. Still a good base layer, but I'm disappointed because I know how great the sleeves/hands could have been.
Great color - weird fit!
I loved the color of the blue. The material felt nice as well. However, the arms felt really short on me and I have 5'5'. The neckline also felt weird on my neck. I wanted to love it but I wound up returning it.
Why are most ‘athletic’ clothes made from plastic?
I like this shirt very much but polyester? So much running or hiking clothes are plastic, what gives?
Is it warm enough?
I bought this to layer on top of other long-sleeved tees for running outside in colder months. I’ve used it already a couple of times and it hasn’t caused been great so far, but I don’t think it will be enough as the weather continues to change.
Great for cold runs!
Love the thumb holes, hand covers with fleece like lining, zipper pocket on side of the shirt. The fit is cozy but not skin tight. Loveeee this shirt for running in the cold weather so far.

