How to Choose Base Layers
REI Co-op Lightweight Half-Zip Base Layer Top - Men's
$49.95
Members get an est. $4.99 in rewards
A synthetic base layer for moderate temps, the men's REI Co-op Lightweight Half-Zip keeps you dry and comfortable whether you're venturing into the mountains or trekking across open desert.
- Recycled polyester/spandex wicks sweat and dries quickly
- Fabric has a soft and silky feel for next-to-skin comfort
- UPF 50+ sun protection
- High neck coverage with a half-zip front for ventilation when you're working hard
- Underarm gussets ensure you can reach and move with ease
- Locker loop for hang-drying
- Back length on size M: 28 in.; back length on size M Tall: 30 in.
- Weight (size M): 7.1 oz.
- Machine-wash warm; wash separately; do not use bleach or fabric softeners; tumble dry low and remove promptly
- Made in a Fair Trade Certified™ factory
- 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 all REI Co-op Men's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | Partial-zip |
| Fabric | 94% recycled polyester/6% spandex (bluesign approved) |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50+ |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Lightweight |
| Sleeve Length | Long Sleeve |
| Gender | Men's |
| Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials Fair Trade Certified™ Factory From a Climate Label Certified brand |
Need help choosing gear?
More expert advice
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.
Write a Review
Adding a review will require a valid email for verification
Customer Images
Location:Renton, WA USA
Age:65–74
Weight:250–275 lbs.
Height:6'5"
1 year ago
Nice Fit, Extremely Comfortable, Another REI Win
Yes , I recommend this product
Remarkable lightweight jacket, perfect for all weather applications. Great active or casual wear extra layer. XXL Tall fits 6 foot 5 inch individual well. Sleeves and torso are long enough.
Age:65–74
Weight:250–275 lbs.
Height:6'5"
Height:6'2"
Age:75 or over
Weight:175–200 lbs.
2 days ago
Height:6'2"
Age:75 or over
Weight:175–200 lbs.
3 days ago
Location:Alaska
Age:65–74
Weight:175–200 lbs.
Height:5'8"
6 months ago
Versitile and stylish.
Yes , I recommend this product
Just what I was looking for. Loose enough to layer a tee shirt underneath and excellent to use for layering. Packs easily for trips. Initially bought black but decided to buy another color too.
Age:65–74
Weight:175–200 lbs.
Height:5'8"
Location:Tampa Bay
Height:5'11"
Age:55–64
6 months ago
Excellent value and performance
Excellent performance, quality and value. If you’re looking for a base layer, this is worth checking out.
Height:5'11"
Age:55–64
9 months ago
1 week ago
Not Worth It
No, I do not recommend this product
Clings to the body. Very thin materiel. Smooth as a soda bottle. I don't know how well it breathes. Not stylish enough to wear as outerwear. REI charged $7.99 for returning the item. REI won't give me back the Rewards money I used to make this purchase.
Age:45–54
Weight:200–225 lbs.
Height:5'9"
3 months ago
Doesn't Fit
No, I do not recommend this product
Price was good but shirt is too short. I bought it on clearance with a gift card so I won't exchange it, but won't buy another one. Not sure if I'll even wear it on a hike.
Age:45–54
Weight:200–225 lbs.
Height:5'9"
Location:Conway, MI
Age:65–74
Weight:150–175 lbs.
Height:5'8"
4 months ago
REI Scores Again With a Great Product
Yes , I recommend this product
I purchased at a great price with my membership points and discount. The shirt is well made with excellent fit and finish as well as being comfortable and warm.
Age:65–74
Weight:150–175 lbs.
Height:5'8"
3 months ago
Asked to review item not delivered
Order was canceled by REI. Reason given was it was no longer in stock after my order was placed. Then I’m asked to review it..?
1 - 10 of 23 Reviews