REI Co-op Swiftland Grid Running Tank Top - Men's
Keep your cool till your cooldown in the men's REI Co-op Swiftland Grid Running tank top. Its stretchy, moisture-wicking fabric is light and airy, providing featherlight coverage on hot days.
Key Details
- Ultralightweight and breathable, the recycled nylon/spandex grid fabric stretches, wicks sweat and dries fast to keep you cool on the trail
- Racerback for unrestricted arm movement
- Chafe-free seams for comfort
- Side vents for ease of movement
- Slight droptail hem coverage
- Reflective hits on front and back
- Back length: Regular sizes: 29 in.; Tall sizes: 31 in.
- Machine-wash cold; do not bleach; 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
Imported.
View the REI Co-op Swiftland Product LineView all REI Co-op Men's Running ShirtsBest Use | Running Trail Running Fitness |
---|---|
Shirt Type | T-shirt |
Fabric | 73% recycled nylon/27% spandex |
Moisture Wicking | Yes |
Quick Drying | Yes |
Sleeve Length | Sleeveless |
Hood | No |
Gender | Men's |
Weight | 2.8 ounces |
Sustainability | 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 | |
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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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Lightweight and airy Fabric, but loose fitting.
Overall, the product performed well on my recent hot, humid, and hot, normal humidity runs. The fabric wicks away moisture well, feels light and breathes well. On one of my longer runs, the moisture evaporated quickly and did not leave a soaking wet feeling when used. The shoulders have enough coverage for my running vest, but not wide enough to use on really long runs due to chafing, as it would not cover as much on the back. When used as intended, it works well. It is more loose-fitting and not an athletic fit. The fabric feels light and is perfect for the warmer months or even race day.
Light and airy running tank
I wasn’t crazy about the camo-ish look at first glance, as I usually prefer bright colors for visibility. However, this green palette looks sharp when paired with the forest green Swiftland shorts. As to fit, this is great. It’s extremely lightweight, breathes really well, and does a great job wicking away moisture for me as a copious sweater when I run. The material doesn’t cling either, which helps with the airflow. For the heat and humidity of a Southern summer, this tank top is a great choice.
Very nice and fun tank top
Very nice tank top. Perfect for running. The design is very great in my opinion. I like the colors and the texture. The tank top is very light and barely noticeable which is great for long run. Easy to clean and dry extremely quickly. The only negative point is that I preferred a medium and it might be a bit large. So something to consider
Super airy and light, dries fast
Recreational runner here, typically average about 50 miles per month. Fabric - very light to the touch and airy, great temperature control for warm days and runs, fabric allows for an easy breeze Fit - I would true to size for a medium and has a more "standard" fit over a "slim," which helps with heat management, but isn't too baggy/bulky to be flapping around or annoying Quick dry - I tend to sweat pretty heavily with runs, but this tank did a great job of drying off quickly just sitting outside at a cafe for a coffee, never had a heavy/damp feeling Color - green is super vibrant but the pattern is a little weirdly joined together, small nitpick and totally subjective, so while I found it "meh," it doesn't really deduct from the overall use or performance of the tank Overall - has become one of my favorite running tanks that I also use for more sweaty workouts
Perfect for Carnival Vibes and Beyond!
I wore the REI Co-op Men's Swiftland Grid Running Tank at Trinidad Carnival, and it was hands down the perfect choice! From the moment I put it on, I could tell it was built for movement. The lightweight, breathable fabric kept me cool and dry through the heat, the crowds, and hours of non-stop dancing. Even under the blazing Caribbean sun, the sweat-wicking material did its job—no sticky discomfort, just pure comfort. The fit? Spot on. Snug but not restrictive, it let me move freely while I jumped, danced, and fully embraced the soca energy. No chafing, no irritation—just soft, comfortable fabric that felt great all day long. Plus, the sleek, modern design fit right in with the Carnival vibe, and I even got a few compliments along the way. What really impressed me was how well it handled the heat. Even in the hottest part of the day, I stayed cool, and when the party stretched into the night, the reflective accents were a nice touch. This tank has definitely earned a top spot in my activewear lineup. Whether you're hitting the road for a run or dancing till sunrise at Carnival, it delivers on both style and performance. Highly recommend!
Lightweight and packable
Extremely lightweight and packable. Fits well, either as a sole layer or an underlay. I tend to use it more as an underlay only because in practice I'm not terribly fond of the print — too busy. But in some other neutral color, black, etc. this would easily be a running shirt in hotter weather.
Great towel, terrible tank
I would avoid this tank for any active pursuits. It is great at absorbing sweat but horrible at letting it evaporate. Never before have I had a shirt that needed to be taken off mid-run to wring out. The cut is insanely baggy around the stomach; I usually wear a large but the medium feels like a dress. All this contributes to feeling like I'm wearing a plastic bag while running.
Good fabric bad cut
I like the fabric used. It feels like a quality tech fabric. However the fit of the neck opening is weird. The neck looks normal on the model. But in real life it is like a boat neck in the back. I like a tank that scoops in the front and not in the back.
Great running for warm temps
I bought this a few weeks ago for an upcoming race this summer. I love the breathability and light weight. This top is best for warm weather. If you’re running in cold/cool temps, you will be pretty chilly.
great fabric poor color offerings
Enjoy this product. Extremely disappointed in the color offerings. There should be white/very pale grey for the warm weather months. The black and green offerings are heat magnets and absorb the heat.