How to Choose Hiking Socks
REI Co-op COOLMAX EcoMade Lightweight Hiking Crew Socks
$17.95
Designed to keep feet happy on the trail, REI Co-op COOLMAX EcoMade Light hiking crew socks wick sweat and breathe to help your feet keep their cool.
- The polyester yarn in COOLMAX® EcoMade fabric comes from recycled water bottles
- Lightweight cushioning enhances comfort
- Stretch nylon provides durability; spandex yarns improve fit
- Reinforced heels and toes stand up to wear and tear
- Seamless toe construction helps prevent chafing
- 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 | 77% COOLMAX EcoMade polyester/22% nylon/1% spandex |
| Sock Height | Crew |
| Sock Cushioning | Light Cushioning |
| Quick Drying | Yes |
| Moisture Wicking | Yes |
| Gender | Unisex |
| Sustainability | Contains recycled materials 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
Love these cool Max socks
Elevation3 years ago
I find these socks to be the right thickness for summer hiking, i have the rei light cushion socks which in my opinion are way to thick for summer, but I really love how the cool Max fit, and i have tried darn tough, merino wool, and they felt like they were cutting off the circulation to my feet that I had to return them....so 2 thumbs up for the rei cool Max socks
Elevation
6 people found this review helpful
Most Helpful Critical Review
The worst I've ever bought from REI
Jda953 years ago
I've always bought my hiking socks from REI. First the Thorlo brand they used to carry then the REI brand. Not just for hiking, but all the time in the winter with boots and indoors with slippers. I guess it's been 2-3 years since I bought new socks since they last forever. I bought 3 pairs of these, wore 1, and the other 2 are going back. These socks feel very thin and cheap. I wear a size small (4-6.5) since I am a size 5. Always a perfect fit in the past. These socks aren't too long. They fit fine through the heel and length of my foot. However, the socks balloon out in the toe area. They're baggy and completely unsupportive. I would need duck-shaped feet to fill out the toe! So, I cannot recommend these and will look a different brand going forward
Jda95
NC
18 people found this review helpful
Customer Images
Jda95
NC
The worst I've ever bought from REI
3 years ago
I've always bought my hiking socks from REI. First the Thorlo brand they used to carry then the REI brand. Not just for hiking, but all the time in the winter with boots and indoors with slippers. I guess it's been 2-3 years since I bought new socks since they last forever. I bought 3 pairs of these, wore 1, and the other 2 are going back. These socks feel very thin and cheap. I wear a size small (4-6.5) since I am a size 5. Always a perfect fit in the past. These socks aren't too long. They fit fine through the heel and length of my foot. However, the socks balloon out in the toe area. They're baggy and completely unsupportive. I would need duck-shaped feet to fill out the toe! So, I cannot recommend these and will look a different brand going forward
Age:55–64
Typical Shoe Size:Womens 5
No, I do not recommend this product
Chibini
Southern California
Two distinct lengths for these socks
2 years ago
I love this sock, and as a vegan, have been buying many pairs over the years. But the length of the sock comes in two distinct sizes now, but they are considered the same sock by REI. I have added a photo to show this issue. I could only find a size L in the store for comparison, but even this L size comes with a shorter top part than the S sizes which have the longer top lengths—I much prefer the shorter ones, crew but not quite quarter length. So I had to return the socks. There seems to be no way of designating shorter vs longer version.
Yes , I recommend this product
Elevation
Love these cool Max socks
3 years ago
I find these socks to be the right thickness for summer hiking, i have the rei light cushion socks which in my opinion are way to thick for summer, but I really love how the cool Max fit, and i have tried darn tough, merino wool, and they felt like they were cutting off the circulation to my feet that I had to return them....so 2 thumbs up for the rei cool Max socks
Typical Shoe Size:Mens 12
Yes , I recommend this product
Brenda A
Issaquah, WA
Not the same as before
3 years ago
These socks are not the same as previous purchased. The workmanship is not as good and they are not as snug fitting even though they are the same size.
Typical Shoe Size:Womens 6
No, I do not recommend this product
SameGirlDifferentDress
Houston, Texas
Way too big!
1 year ago
If these had been the right size I would have given them 5 stars… I’m an adult female with a shoe size 7 so I got mediums as suggested in the sizing guide. I ended up giving them to my son who wears size 12 shoes. He loves them and thinks they are the perfect size for him… lol
Age:35–44
Typical Shoe Size:Womens 7
imkristing
Boulder, CO
Great Sock but a tad Large
4 years ago
Just purchased these last week and wore them for a 7 hour hike this weekend.. they're the perfect weight for fall or early winter hiking but if you're in-between sizes, I would take the smaller size. I'm a 9.5 -10.5 size shoe (depending on street shoe, hiking shoe, or running shoe) and the large sock moved and bunched up on me a little during the hike. I'll keep the large for casual wear or small hikes but I definitely need a medium for longer hikes to avoid rubbing from bunched up fabric.
Age:25–34
Typical Shoe Size:Womens 10
Yes , I recommend this product
Jenn
Fine socks, no issues.
2 years ago
I had bought a pair of these previously for day hiking and liked them. I usually wear a layer under any socks when hiking. And so I do that for these as well. I do feel like the recent pair I bought might be better quality. It feels a little nicer and the knit looks tighter than on my other pair. I am not sure if they are better or wore than other socks, they do the job for me and I had got a second pair since they were on sale. For the price, I have no issues.
LIV415
Auburn, CA
run big
1 year ago
The socks run big, I wear a women’s 9 and went based off the size chart so I ordered medium. They were way too big and I had to return. I ordered a small and they are perfect.
Age:35–44
Typical Shoe Size:Womens 9
Yes , I recommend this product
srocks
Inconsistent sizing
1 year ago
I returned the Castlerock color because it was at least 2 inches longer than the same size of the Larkspur color. They looked like they would be way too long.
Typical Shoe Size:Womens 10
No, I do not recommend this product
Megan
ATL GA
Great alternative for wool socks
4 years ago
These socks are great for hiking. I cannot wear anything with wool in them, so these are a great alternative. Have had several pairs and love them.
Typical Shoe Size:Womens 7
Yes , I recommend this product
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