How to Choose Hiking Socks
REI Co-op Trailsmith Merino Wool Crew Socks
This product is not available. Good news: we have a newer version.
Get out there—and then keep going—with the soft comfort of the REI Co-op Trailsmith Merino Wool crew socks. They're naturally odor resistant and moisture wicking.
Shop newer version- Made from a blend of merino wool and nylon with a touch of spandex, these socks are durable, breathable and comfortable in any season
- Machine wash inside out in cold or warm water with no bleach or fabric softener; tumble dry on low; do not iron or dry clean
- 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 with imported and domestic yarns
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% merino wool/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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Most Helpful Favorable Review
Excellent
Andrew Dye1 year ago
Excellent socks. Thin enough to wear with any loafer or sneaker. But thick enough to to get your feet warm in boots out on the trail. The wool is soft and comfortable. And the stitching makes them super durable in high wear areas on your foot (heel/toes etc.) Highly recommend.
Andrew Dye
VA
7 people found this review helpful
Most Helpful Critical Review
Ridiculously Tight!
Greyhound2 years ago
This item takes unnecessary exaggerated compression aspect to a new level (in a very bad way).
Socks run small and are extremely tight fit. Compression aspect is not a benefit when taken to this extent.
Unwearable.
Greyhound
18 people found this review helpful
Customer Images
Kayla
Allentown, PA
Exceeded Expectations
8 months ago
Wow! I didn't expect to like these socks as much as I do. They are a nice medium thickness. They feel well-made, and are just stretchy enough to be comfortable, but tight enough to keep their shape. I'm going to order more colors.
Age:25–34
Typical Shoe Size:Womens 8.5
Yes , I recommend this product
Andrew Dye
Virginia
Excellent
1 year ago
Excellent socks. Thin enough to wear with any loafer or sneaker. But thick enough to to get your feet warm in boots out on the trail. The wool is soft and comfortable. And the stitching makes them super durable in high wear areas on your foot (heel/toes etc.) Highly recommend.
Age:35–44
Typical Shoe Size:Mens 10.5
Yes , I recommend this product
Walker65
Did not wear well
2 years ago
While these socks are comfortable and have good cushion around the foot, and they look good, the pair I purchased showed signs of wear after only 1 use (a 4-mile walk/hike). The sock rubbed against the inside front of my shoe and is nearly torn through. I will stick with Darn Tough and Smatwool, those socks wear hood and long,
Age:65–74
Typical Shoe Size:Womens 9.5
No, I do not recommend this product
Greyhound
Ridiculously Tight!
2 years ago
This item takes unnecessary exaggerated compression aspect to a new level (in a very bad way). Socks run small and are extremely tight fit. Compression aspect is not a benefit when taken to this extent. Unwearable.
Age:45–54
Typical Shoe Size:Mens 10
No, I do not recommend this product
Dman
Not for hiking
2 years ago
They are a comfortable and warm wool sock but not good for hiking. I wrote them on a short 7 mile hike and the sock rubbing against the back of the shoe pills up and creates hard balls of wool that have me a blister. Only sock that has done this, smartwool socks have not given me any issues.
Age:45–54
Typical Shoe Size:Mens 13
No, I do not recommend this product
Carly
Oregon
great socks
7 months ago
I bought these socks for field work with the Forest Service and these were one of my favorite pairs of socks. They’re breathable, thin but comfortable, and have a nice pattern. I didn’t feel the need to take them off immediately as soon as I got home from work.
Age:18–24
Typical Shoe Size:Womens 8.5
Yes , I recommend this product
very satisfied customer
1 year ago
great socks. i got two pairs from the clearance bin over the summer in a color they don't sell anymore - i didn't think i'd like them because i'm a bit of a brand loyalist to smartwool. however, once i started wearing them i could not stop!!! they're incredibly comfortable (i have sensory issues so i hate most socks) and go great with pretty much everything. i'll be buying three more pairs for sure!!
Age:18–24
Typical Shoe Size:Womens 10
LAinWC
San Francisco Bay Area
Comfortable socks
1 year ago
These Trailsmith socks fit snugly and are comfortable and fairly soft. They are a nice thickness with medium padding (not like a thick bootsock and not like a thin Coolmax sock). The pattern is OK although surely some people would love the design while some others would disdain it-- to each his own. I would buy again if offered at a low price.
Typical Shoe Size:Mens 9
Yes , I recommend this product
Alicia T
Berkeley CA
Warm and comfy
2 years ago
These are the perfect Winter boot socks. Wether walking in snow, on freezing streets or in the mud, these socks keep my toes warm and stay up on my calves. Highly recommend!
Age:55–64
Typical Shoe Size:Womens 7.5
Yes , I recommend this product
DJH
Spokane, WA
Fit well
11 months ago
Fit well, are warm and comfortable.
Age:65–74
Typical Shoe Size:Womens 8
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