How to Choose Hiking Socks
REI Co-op Trailsmith Merino Wool Crew Socks
$11.79Compared to $16.95*Save 30%
Treat your feet to all-day comfort in any season with these REI Co-op socks. The soft merino wool blend provides warmth and breathability—and it's naturally odor-resistant, too.
- Thermoregulating merino wool is cool in the summer and warm in the winter
- Seamless toe closures reduce chafing
- Reciprocated heel and toe for a better fit
- Nylon reinforcement provides extra durability at high-wear heel and toe areas
- LYCRA® spandex from top to toe for all-day comfort and fit
- Arch support
- Light cushion underfoot for improved comfort
- Double-turn welt to prevent raveling
- Machine wash inside out in cold or warm water; do not use bleach or fabric softener; tumble dry low
- Made in USA with imported and domestic yarns
- 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
Made in USA.
View the REI Co-op Trailsmith Product LineView all REI Co-op Men's Hiking Socks| Best Use | Hiking Casual |
|---|---|
| Fabric | 59-60% merino wool/37-38% nylon/3% LYCRA spandex |
| Sock Height | Crew |
| Sock Cushioning | Light Cushioning |
| Quick Drying | Yes |
| Moisture Wicking | Yes |
| Gender | Unisex |
| Sustainability | From a Climate Label Certified brand |
REI Co-op Socks - Unisex Adult
| S | M | L | XL | S/M | L/XL | |
|---|---|---|---|---|---|---|
| U.S. Men's | 5.5-8.5 | 9-12 | 12.5-14 | 5.5-8.5 | 9-14 | |
| U.S. Women's | 4-6.5 | 7-9.5 | 10-12.5 | 4-9.5 | 10-12.5 |
Sizing Notes
For socks, please use shoe size.
Buying 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.
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Location:DFW, Texas
Age:35–44
Typical Shoe Size:Womens 11
2 months ago
Nice Socks, Ugly Color
Yes , I recommend this product
The socks are comfortable and fit very well, especially given my admittedly thick ankles. However, the color is exceptionally ugly. The picture really doesn’t do the ‘shell-white’ justice. They’re more ‘greige’ like dirty sink water. The color effectively makes the socks look several months old already despite being new. I’ll wear them anyway, but just thought others should know.
Age:35–44
Typical Shoe Size:Womens 11
Location:San Diego
Age:35–44
Typical Shoe Size:Mens 9.5
1 month ago
Socks
I bought these socks and they ripped when i was putting them on the second time using them
Age:35–44
Typical Shoe Size:Mens 9.5
Response from REI
REI Product Support
1 month ago
Typical Shoe Size:Mens 9.5
4 months ago
Itchy
No, I do not recommend this product
Got 2 pair. Fit was different between them. The foot portion was comfortable but the upper/calf portion was noticeably itchy and rough even as soon as I pulled them out of the bag. Returning.
Typical Shoe Size:Mens 9.5
Location:North East to California
Typical Shoe Size:Womens 8
6 days ago
Great socks great price
Yes , I recommend this product
Loved these socks. I wear a size 8 shoe and the socks fit perfectly. They are higher than the average crew sock making them more versatile. They feel comfy and warm and the cushion is perfect for leather boots and hiking boots. It’s extra protection that is not too bulky with no pesky seams that rub the wrong place on your toes.
Typical Shoe Size:Womens 8
Location:Troy Ohio
Typical Shoe Size:Mens 8.5
1 week ago
Warm and Comfy
Shoe size is 42 Euro or 8.5 USA Medium fits great, warm and comfy with no bunching very well pleased
Typical Shoe Size:Mens 8.5
3 weeks ago
3 weeks ago
1 month ago
Age:65–74
1 month ago
Yes , I recommend this product
Age:65–74
2 months ago
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