How to Choose Hiking Socks
REI Co-op Merino Wool Midweight Hiking Crew Socks
$19.95
With allover cushioning, the REI Co-op Merino Wool Midweight hiking crew socks add a bit of warmth for cooler hikes—but they're still naturally breathable, moisture-wicking and odor-resistant.
- Reinforcement at heels, toes, footbeds and Achilles provides long-wearing comfort
- Stretch arch bands provide effective support
- Seamless toes prevent chafing
- Machine wash in cold or warm water, no bleach or fabric softener; 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
- Made in USA with imported and domestic yarns
Made in USA.
View all REI Co-op Men's Hiking Socks| Best Use | Hiking |
|---|---|
| Fabric | 81% merino wool/18% nylon/1% LYCRA spandex |
| Sock Height | Crew |
| Sock Cushioning | Medium Cushioning |
| 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
Perfect wool sox!
BRicci2 years ago
These sox were just what I was looking for! I work outside in the plant nursery business and am always looking for warm, cushion-y sox for late fall and winter weather. I wanted sox that were closest to 100% wool, and these sox stay up on my calf all day without a lot of additional stretch materials added. I am a small woman at 5’2, wear a size 7.5-8 shoe and ordered a Medium—they fit perfectly. I wash the sox in the washer but just air dry, and they continue to fit perfectly. Am buying a few more pairs!
BRicci
Northern VA
6 people found this review helpful
Most Helpful Critical Review
A new sock in town
Alan S4 years ago
REI has changed everything thing about these. I’ve been wearing the same style and size for over 15 years and suddenly they are different. The fit from toe to heel is short and the rise has been shortened. Not what I was expecting.
Alan S
Los Angeles
19 people found this review helpful
Customer Images
Zipster
Seattle WA
Weave and fabric content have changed 😞
1 year ago
I've purchased this brand, style and weight over several years. Now, the sock material and style have changed. As compared to the ones I just purchased, my others do not have nylon content and the weave is a closer knit. I purchased these for the cushion and reliable warmth of wood. This new version doesn't have enough cushion and I'm concerned that, if they get damp/wet, they will not be warm. The leg of the sock (part that goes up the ankly) is 2" longer than others of the same brand & style. Since I did not use the socks, I don't know if this is pro or con ... just an ob I rarely return things to REI, but this is going back
Age:65–74
Typical Shoe Size:Womens 9.5
No, I do not recommend this product
Tania
Seattle,WA
Terrible quality
4 months ago
I’ve been purchasing/wearing these same REI socks for about 20 years now and I have to say they’ve gone significantly downhill. Ooooof… the amount of stretch in the ankle is waaaaay too much. I wore them for all of about 20 min and they started slipping down. The stretch in the toe box is the same. Too much. My toes were sliding all over. I also compared them side by side with my REI socks that I purchased 2 years ago and the fabric was super different. I’m actually going to return them they are so bad. It’s really unfortunate what has happened to the REI brand over the last few years. It used to be a brand I could count on for at least minimal quality.
Age:35–44
Typical Shoe Size:Womens 7
No, I do not recommend this product
Ferny
East Bay, CA
Garbage
1 year ago
Don’t waste your money. These sox stretch way out of shape and more than a size larger on the first wearing and never return to their original size.
Age:45–54
Typical Shoe Size:Womens 8.5
No, I do not recommend this product
MollyGraceless
Colorado
Not comfortable, nor correct size
9 months ago
Purchased these last night, after not being able to find the same kind I bought last year at REI. Absolutely the worst socks I've ever had. The toe box is huge, the length is more a size 11-12, NOT close to a 7. They bunched up in my boots today, and were so uncomfortable that I was having a hard time walking-and I walk 2-10 miles a day for work. Since I purchased two pair, and wore one today, the other pair is going back ASAP. Possibly someone sized them incorrectly, and I know they are "unisex", both men's and women's, but they don't fit like a sock should.
Age:65–74
Typical Shoe Size:Womens 7
No, I do not recommend this product
Snowangel50
Baltimore, md
Very warm, sweat wicking
2 years ago
I got these sometime around 2016 when I broke my foot and needed thick socks and sturdy boots to recover. Rei is genius for offering these to try on whilst trying shoes. I bought 3 pair. They’ve been out of stock consistently but I hope that’s just seasonal/holidays. They retain stretch, wick away sweat, stay mostly up, and up until yesterday I didn’t know they were wool! There’s zero itch and I’m pretty sensitive to itchy wool. Hopefully they haven’t changed how they’re made since 2016. I live in a barn basically and find myself reaching for these socks in particular for the way they retain heat and wick away sweat= keeps my feet warm. Other socks can make them sweat and thus freeze in here.
Age:25–34
Typical Shoe Size:Womens 8
Yes , I recommend this product
Alan S
Los Angeles
A new sock in town
4 years ago
REI has changed everything thing about these. I’ve been wearing the same style and size for over 15 years and suddenly they are different. The fit from toe to heel is short and the rise has been shortened. Not what I was expecting.
Age:55–64
Typical Shoe Size:Mens 12
No, I do not recommend this product
BrittLe
Received free product
Seattle, WA
Keeps my toes toasty!
5 years ago
I'm a pretty big fan of these socks. I tend to buy thinner wool socks because I have wider feet, and sometimes thick socks make make my shoes feel uncomfortably tight. While these are pretty thick, I didn't think they were cumbersome. They were thick enough to keep my feet warm while I was on the move, and I didn't notice any unpleasant pressure. Though my feet are pretty wide, they're also quite small (I wear a women's size 5), and these socks were still too big for me even though I got the smallest size, which detracted from their comfort.
Yes , I recommend this product
Marley
MD
Horribly cheaply made
1 year ago
The socks are very poorly made. I can feel the texture with every step. The footpad is so loosely knit. I can't believe REI is selling these. So irritated. Thank God I'm not on the trail. I've used exclusively merino wool medium or thick cushion, all the top brands, never experienced this prior. They are not even worth a dollar. Useless.
Age:55–64
Typical Shoe Size:Womens 8.5
No, I do not recommend this product
BRicci
Northern VA
Perfect wool sox!
2 years ago
These sox were just what I was looking for! I work outside in the plant nursery business and am always looking for warm, cushion-y sox for late fall and winter weather. I wanted sox that were closest to 100% wool, and these sox stay up on my calf all day without a lot of additional stretch materials added. I am a small woman at 5’2, wear a size 7.5-8 shoe and ordered a Medium—they fit perfectly. I wash the sox in the washer but just air dry, and they continue to fit perfectly. Am buying a few more pairs!
Age:55–64
Typical Shoe Size:Womens 7.5
Yes , I recommend this product
Northshorecowboy
Salem, MA
Good quality, but now too short for comfy fit
1 year ago
Have always been a big fan of REI's version of Smartwool crew hiking socks, UNTIL my most recent purchase of two pair midweight and two pair lightweight. While the composition and of the material and the quality of the construction appears to be the same, when I got home and put them on, I discovered that the socks are now significantly shorter. They are at least one inch shorter, and probably closer to two inches shorter. The change is very obvious to me since besides hiking boots, I wear them with my cowboy boots too and prefer the socks pulled up all the way. Seems to me it is another version of downsizing tactics. Keep the price the same, but save money by shortening them and using less material. Disappointing to say the least. I'd return all four pair, but sadly I tossed the packaging with confidence days before I went to wear them.
Typical Shoe Size:Mens 11
No, I do not recommend this product
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