REI Co-op Sahara Shade Long-Sleeve T-Shirt - Men's
You can wear this beloved REI Co-op tee on the trails, on the water or just about anywhere. Its soft, stretchy fabric provides UPF 50+ protection. Discreet thumb loops hold the sleeves in place.
Key Details
- Polyester/spandex fabric is soft, stretchy, moisture-wicking and quick-drying
- ShadeFactor™ 50+ fabric provides UPF 50+ sun protection that is inherent in the material and never washes away
- Underarm construction method keeps bulky seams out of high-sweat areas, allowing for easier wicking and moisture transfer
- Hidden thumb loops help keep sleeves in place; the design maintains fabric coverage over your wrists even when you're not using the thumb loops
- Shoulder seams are rolled forward to minimize chafe from pack straps
- Flatlock seams for overall comfort
- Locker loop at interior neckline lets you easily hang the shirt to dry
- Back length on size M: 28 in.; size M Tall: 30 in.
- Regular fit
- Machine wash warm; do not bleach; 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 Sahara Product LineView all REI Co-op Men's Hiking Shirts| Best Use | Hiking Watersports |
|---|---|
| Shirt Type | T-shirt |
| Fabric | 91% polyester/9% spandex (bluesign approved) |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50+ |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Sleeve Length | Long Sleeve |
| Hood | No |
| Thumbholes | Yes |
| Gender | Men's |
| Weight | 7.4 ounces |
| Sustainability | Contains materials that meet the bluesign® criteria From a Climate Label Certified brand |
Fits slightly large based on reviews
| 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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Customer Images
Great shirt for running, skiing, active sports
I received this product for free from the REI Trailblazers sampling program in exchange for my honest review. This is a solid long sleeve, sun protective shirt. I've used it on it's own and also as a base layer under a jacket for skiing and running. It wicks away moisture surprisingly well, has thumb holes (a plus for running). It's stretchy, and I don't have to worry about sun getting through. I'll be wearing this when I'm out of the water from surfing. I'm 6'1" and have a medium that fits well. Fit is regular, some extra room but doesn't feel baggy. I recommend it - great product.
Great Material and Color, but Very Wide Fit
This is a really nice long sleeve shirt overall. The material feels great. It is cool, breathable, and very comfortable to wear, which makes it perfect for being active or spending time outdoors. I also like the thumb holes in the sleeves. They are a nice feature that helps keep the sleeves in place and adds a bit of extra comfort. The color is excellent as well. It looks just like I expected and is one of my favorite things about the shirt. My only complaint is the sizing. I ordered a large, which normally fits me well, but this shirt is much wider than expected. It feels almost comically wide across the body. If the fit were a little more tailored, this would easily be a perfect shirt. Overall, it is a great shirt with comfortable material, useful thumb holes, and a great color, but the sizing runs very wide.
Luxurious Feeling Shade T-Shirt
I have worn this long sleeved t-shirt for a couple of weeks as a base layer because of the cold weather, but today was warm enough to wear by itself. The shirt is made of polyester and spandex and feels really great against the skin. It fits loose on the body allowing air to flow and not get too hot. The thumb grips are an interesting feature to keep the sleeve down. I really like the olive ridge heather color as well. This makes a sturdy base layer or outer t-shirt to keep off the sun and is soft on the skin. I want to wear this every day.
Go-To Workhorse
This is a workhorse of a sun shirt as one might expect from the Sahara line. It provides excellent sun protection without feeling too “heavy” on a hike or a beach day. It feels like the sort of short and fabric that responds to your temperature. The color is lovely and it has a standard hanging tie.
REI Co‑op Men’s Sahara Shade Long‑Sleeve T‑Shirt
The REI Co‑op Men’s Sahara Shade Long‑Sleeve T‑Shirt in Olive Ridge Heather (size Large) is an excellent lightweight layer for sunny days outdoors. The shirt runs true to size and offers a comfortable, relaxed fit. The material feels soft against the skin and is impressively breathable, making it ideal for warm weather activities like hiking, walking, or casual wear. It’s also lightweight with just the right amount of stretch, so it moves easily with you throughout the day. Durability is clearly a priority in the design. The hem and neck feature solid double stitching, while the shoulders, armpits, and side seams appear reinforced beyond that, giving confidence that this shirt will hold up to regular use over time. The thumb holes are a great feature, comfortably extending coverage over the hands for added sun protection. A small sewn-in string loop for hanging the shirt is another thoughtful touch. Overall, it’s a sharp-looking, functional sun shirt I’m excited to wear often. ☀️👕
Nice multi-season shirt!
Great versatile shirt. Hiked with vest over it in cool winter temps. Comfy and stretches to accommodate movement. Thumb straps on sleeves a nice feature. Looking forward to year-round use with ShadeFactor50 sun protection.
Lightweight And Soft
The product description is spot on. I do not typically shop for long sleeves unless as part of a base layer. I own a few "performance" type synthetic long sleeves but never wear them because they are not comfortable and have a plastic feel and shiny look that I am not a fan of. This shirt is none of those things, very light, very comfortable and fits great. The thumb loops are interesting and like the description says "discreet".
Perfect first layer.
Tested this shirt the day after purchase and it performed wonderfully. Started the hike with this shirt as first layer, with a lightweight REI fleece as over layer. Temp was 50F, and was neither cold nor too warm with this combination. As the temps climbed (as did we), removed the fleece and wore only this shirt. It wicked away sweat, and remained pretty much dry the whole 4.5 mile hike, then dried quickly at hike’s end. SPF rating for this shirt is 50+, and provided ample protection from the very bright sun that day. At approx 1/2 the price of other brands, this is a great deal for the money.
Great shirt for cooler days
Fits to size, nice wicking material and it dries quick after workout. I would definitely recommend this shirt. Thumb holes are good for some, but not something I look for in a shirt. I’ve worn this shirt for several workout and my last one was a 4 mile hike.
Super comfortable
This shirt is really comfortable. It washes up well and holds its form. I have worn it in hot and cold weather and it seems to adjust well because I stayed cool in the heat and warm in the cold. It's almost like there is a 5 or 10 degrees buffer with it. I have gone on hikes with it and it wicks sweat well. I also feel like I could wear it out to dinner and look dressed up. I got a medium size and I'm normally between medium and large, but the medium is plenty big for me but fits well.

