How to Choose Hiking Socks
REI Co-op COOLMAX EcoMade Liner Crew Socks
$11.95
Wear them under your hiking socks as a barrier against chafing, or wear them alone on hot day hikes. The REI Co-op COOLMAX EcoMade liner socks are moisture-wicking, breathable and durable.
- The polyester yarn in REI Co-op COOLMAX® EcoMade liner socks is made from recycled water bottles
- Nylon adds durability, while spandex offers stretch and shape retention so the fit will remain snug, wash after wash
- Smooth, flat toe seams ensure no bunching or irritation for your toes
- Machine wash inside out 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 | 50% COOLMAX EcoMade polyester/49% nylon/1% spandex |
| Sock Height | Crew |
| Sock Cushioning | No 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
run small
Alaska5003 years ago
Nice socks, slightly thicker knit than I expected for "liner socks". They feel like poly crepe. However, the size chart did not work for me. I wear womens 10 and ordered size L, and they are too small.
Alaska500
AK
12 people found this review helpful
Most Helpful Critical Review
Don't buy this sock
Patricia3 years ago
Thick seam in toe section of shoe makes this sock causes blisters
Patricia
27 people found this review helpful
Customer Images
Trail Gail
Underwear for your hiking socks!
2 years ago
Good to go…these boot liners fit the bill. I do wash them in cool water in my machine, but hang dry to prevent shrinkage. They do not stay white after a short while.
Yes , I recommend this product
Moira
Helps prevent blisters
1 year ago
I typically wear these under another pair of socks and they are great for preventing blisters! Despite the double layer I also rarely overheat in them.
Age:18–24
Typical Shoe Size:Womens 6.5
Yes , I recommend this product
WildernessFan
Denver, CO
Does not perform as intended
3 years ago
I used these midway through my week long trail crew trip, after having previously used my preferred brand of liner socks for the first half. I got a blister at the end of my first day using these liners. (I literally can’t remember the last time I got a blister hiking or backpacking.) Since I was hiking the same trail back and forth to the work site, the only factor that changed was these liner socks. The texture doesn’t feel as fine as the liner sock brand that I prefer. I will be returning them.
Patricia
Don't buy this sock
3 years ago
Thick seam in toe section of shoe makes this sock causes blisters
Paul
Maine
Excellent Liner Socks!!
9 months ago
As an avid year round hiker let me just say these liner socks worn inside my Vermont Darn Tough wool socks are a match made in heaven. I hike with waterproof Keen boots in the Maine mountains and I used to get at least one nasty blister on my toes during the longer 12-16+ mile hikes (ascending and descending very steep rugged terrain. These liner socks completely prevent those blisters and they excel in wicking away sweat. I couldn’t be more satisfied with this product and I’m planning to purchase more of these.
Age:45–54
Typical Shoe Size:Mens 12
Yes , I recommend this product
Alaska500
Alaska
run small
3 years ago
Nice socks, slightly thicker knit than I expected for "liner socks". They feel like poly crepe. However, the size chart did not work for me. I wear womens 10 and ordered size L, and they are too small.
Age:55–64
Typical Shoe Size:Womens 10
Yes , I recommend this product
JJ Trail
Bay Area, California
COOLMAX liners--insurance against blisters
3 years ago
I have used these socks for several years now as inner socks in conjunction with Darn Tough hiking socks. I almost never get blisters. They last a long time and are very comfortable. Not even too hot in the summer. With a product like this available, it seems that there should be no excuse for getting lots of blisters, with the possible exception of long days walking through snow.
Age:65–74
Typical Shoe Size:Mens 11
Yes , I recommend this product
Mackenzie
Columbus, OH
knocked my socks off!!
4 years ago
I was genuinely surprised by how much I loved these socks! When I picked them up in stores, I was surprised by how thin they were and ultimately, didn’t think I’d like them! My boyfriend convinced me to just try them out because “it’s REI and they’re $9. they’ve got to be good” and well, they are!! I took a chance and broke them in during a day’s hike through Hocking Hills and I felt so comfortable and dry the entire time!! They are a cute length too, and stylish! My only issue was that they got dirty so easy, but of course they’re white so I get it!
Age:18–24
Typical Shoe Size:Womens 9
Yes , I recommend this product
Brian
Socal
Prevented all blisters
5 years ago
I have done quite a bit of hiking and I hated getting hotspots/blisters on my feet. After switching to these sock liners I was doing 10 miles with 2000 + feet gain/loss and did not even get a single hotspot. Pair these with darn tough socks and they are absolutely perfect.
Age:18–24
Typical Shoe Size:Mens 9
cvan
Exceeded my expectations
4 years ago
Purchased these from recommendation by Darwin On The Trail (those hip to his Youtube channel will know...) and I will say they definitely exceeded my expectations. I did not expect socks under $10 to work so well. I pair them with other athletic socks while hiking and backpacking and have definitely noticed how much less my feet rub and/or sweat with them on. Convinced me to buy several more pairs!
Typical Shoe Size:Womens 6.5
Yes , I recommend this product
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