REI Co-op Swiftland Thermal Running Crew Pullover - Men's
Perfect for crisp days when you don't want to start cold—or overheat after a mile—the men'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
- Reflective details
- Locker loop
- Back length: 28.25 in.; Tall sizes: 30.25 in.
- Machine wash cold; do not use bleach or fabric softeners; tumble dry low
- Contains materials that meet the bluesign® criteria
- 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
Imported.
View the REI Co-op Swiftland Product LineView all REI Co-op Men's Running ShirtsBest Use | Trail Running Fitness Running |
---|---|
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 | Men's |
Weight | 10.6 ounces |
Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials From a Climate Label Certified brand |
XS | S | M | L | XL | XXL | XXXL | 24 IN Waist | 26 IN Waist | 28 IN Waist | 30 IN Waist | 31 IN Waist | 32 IN Waist | 33 IN Waist | 34 IN Waist | 35 IN Waist | 36 IN Waist | 38 IN Waist | 40 IN Waist | 42 IN Waist | 44 IN Waist | 46 IN Waist | 48 IN Waist | 50 IN Waist | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chest | 35 | 36 - 38 | 39 - 41 | 42 - 45 | 46 - 49 | 50 - 53 | 54 - 57 | |||||||||||||||||
Sleeve Length | 32 | 32.5 | 33 | 33.5 | 34 | 34.75 | 35.5 | |||||||||||||||||
Waist | 27.5 | 28 - 30 | 32 - 34 | 36 - 38 | 40 - 42 | 44 - 46 | 48 - 50 | 24 | 26 | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
Hip | 33.5 | 34.5 - 36.5 | 37.5 - 39.5 | 41 - 43 | 44 - 46.5 | 47.5 - 50.5 | 51.5 - 54.5 | 32 | 33.5 | 34.5 | 36.5 | 37 | 37.5 | 38.5 | 39.5 | 40.25 | 41 | 43 | 44 | 46.5 | 47.5 | 50.5 | 52.5 | 54.5 |
Inseam | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated. Size chart values represent body measurements, not garment measurements.
SHORT: Some pants are available in short sizes, which generally means an inseam that is 2.5 inches shorter than regular sizes.
TALL: Some pants, shirts, jackets and parkas are available in tall sizes, which generally means an inseam that is 3 inches longer and a rise that is 1 inch longer, a shirt or jacket body that is 2 inches longer, a parka body that is 2.5 inches longer and sleeves that are 2.5 inches longer than regular sizes.
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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Great for cold weather run
Very comfortable and warm. Ran in the half zip version this morning at 32 degrees F and kept me comfortable. I like the thumb holes and hand flaps which kept my fingers warm. Only downside is the wrist area is a little snug and will get caught on my Garmin watch
Awesome cold weather running layer
This is the best cold weather running layer I've owned. I wear it running as a stand alone layer when it's in the 20's-30's and keeps me at just the right temperature. I think it would be too warm when temps get into the 40's. Breaths very well and feels nice. Nothing bad to say about this one.
Not just a base layer/running shirt
The convertible sleeve to mittens is such a great idea and useful. Waffle weave is great for temperature regulation. Perfect for travel. My daughter takes hers to restaurants as a just in case she gets cold.
Can we maximize performance for me?
Can we have a product that maximizes performance to me instead of on somebody’s ideas about what the shirt might do for the environment?
running
I bought this about a month it’s very comfortable and warm