REI Co-op  Flash Merino Wool Lightweight Quarter Socks

$17.95

The REI Co-op Flash Merino Wool Lightweight quarter socks are our most popular summer-weight hiking socks for good reason—they're naturally breathable, sweat wicking, quick drying and odor resistant.

Color: Asphalt
$17.95
$11.93
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Quantity
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Features

  • Targeted cushioning at heel and ball of foot without too much bulk
  • Reinforcement at heels, toes, footbeds and Achilles provides long-wearing comfort
  • Supportive elastic at arch for extra support
  • Seamless toes prevent chafing
  • Machine wash in cold or warm water; do not use 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 the REI Co-op Flash Product LineView all REI Co-op Men's Hiking Socks

Technical Specs

Best Use

Hiking

Fabric

45% merino wool/44% nylon/8% polyester/3% spandex

Sock Height

Ankle

Sock Cushioning

Light Cushioning

Quick Drying

Yes

Moisture Wicking

Yes

Gender

Unisex

Sustainability

From a Climate Label Certified brand

Size Chart

REI Co-op Socks - Unisex Adult
SMLXLS/ML/XL
U.S. Men's5.5-8.59-1212.5-145.5-8.59-14
U.S. Women's4-6.57-9.510-12.54-9.510-12.5

Sizing Notes

For socks, please use shoe size.

REI Co-opREI co-op logo

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.

List of certifications which include The Climate Label certification,
        member informed certification and 100% satisfaction guarantee
Rei Coop brand gifREI Coop brand tent with a user inside wearing a REI Coop brand sweater
List of certifications which include The Climate Label certification,
        member informed certification and 100% satisfaction guarantee

Reviews
62 reviews with an average rating of 4.8 out of 5 stars

Ratings Snapshot

Product Rating

27 out of 29 (93%) reviewers recommend this product

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Average Customer Ratings

Overall Fit Rating

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Most Helpful Favorable Review

5 reviews with an average rating of 3.0 out of 5 stars
If "lightweight" means "cool" these are mislabeled
Hot Foot
1 year ago
The term "lightweight" might be in the sole of the beholder. I'm sure they're file, but they're hot. And by this is that my feet are HOT in these socks. Similar socks from Icebreaker? Not HOT. I suspect this is mostly related to them being 45% Merino Wool and 55% synthetic fabrics. They should be called Merino Wool Blend socks.
Hot Foot
New York, NY
5 people found this review helpful

Most Helpful Critical Review

5 reviews with an average rating of 3.0 out of 5 stars
If "lightweight" means "cool" these are mislabeled
Hot Foot
1 year ago
The term "lightweight" might be in the sole of the beholder. I'm sure they're file, but they're hot. And by this is that my feet are HOT in these socks. Similar socks from Icebreaker? Not HOT. I suspect this is mostly related to them being 45% Merino Wool and 55% synthetic fabrics. They should be called Merino Wool Blend socks.
Hot Foot
New York, NY
5 people found this review helpful
Anonymous
Rated 5.0 out of 5 stars
1 day ago
Helpful?
Flapjack
Lancaster, MA.
Rated 5.0 out of 5 stars

Very comfortable sock

2 years ago

I just purchased these over the weekend, and they arrived yesterday. They fit really well and are really comfortable. I love the cushioning in the right places and even though it is 85 today my feet are very comfortable. Will buy more for sure.

Age:55–64
Typical Shoe Size:Mens 11
Yes , I recommend this product
Helpful?
buffalodan
Rated 3.0 out of 5 stars

Doesn't really feel like XL sizing

1 month ago

The socks have the targeted cushion that I was looking for, however, my confusion is with the sizing. I vary between a 11.5-12" shoe size but like a larger sock as I do not like a sock that is too tight. That is why I get an XL. Really wondering what someone with a size 13 or larger does as these are really snug around my foot and ankle before washing.

Typical Shoe Size:Mens 11.5
Yes , I recommend this product
Helpful?
Hot Foot
New York, NY
Rated 3.0 out of 5 stars

If "lightweight" means "cool" these are mislabeled

1 year ago

The term "lightweight" might be in the sole of the beholder. I'm sure they're file, but they're hot. And by this is that my feet are HOT in these socks. Similar socks from Icebreaker? Not HOT. I suspect this is mostly related to them being 45% Merino Wool and 55% synthetic fabrics. They should be called Merino Wool Blend socks.

Age:45–54
Typical Shoe Size:Mens 10.5
No, I do not recommend this product
Helpful?
Quality Products Please
San Francisco
Rated 5.0 out of 5 stars

I love mine

2 years ago

I saw them on sale in a wooden barrel at my local REI, took a chance, and they became my favorite pair of warm socks this winter. I couldn’t find them in store again after that, and I also couldn’t find them online again until today. I like them more than SmartWool for warmth, but they are not as smooth as SmartWool. I’d pick the REI socks again over SmartWool because what’s the point of a wool sock that isn’t helping you feel warm? I’m sorry, I don’t remember what size I bought, but for socks I don’t mind S/M

Age:25–34
Typical Shoe Size:Womens 7
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large
Helpful?
shlyye
San Mateo
Rated 5.0 out of 5 stars

Great socks

2 years ago

So sad. Washed and worn only twice and toe seam of one sock is already coming undone, and my toe almost protrudes. Terrific socks otherwise. Great cushion and fits perfectly.

Age:45–54
Typical Shoe Size:Womens 6.5
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large
Helpful?
Kiana S
Tucson, Arizona
Rated 5.0 out of 5 stars

Super comfy!!

1 year ago

I’m in Arizona and it’s really hot out here! These are my first pair of merino wool socks and I love it! Will definitely go get more!

Age:18–24
Typical Shoe Size:Womens 7
Yes , I recommend this product

Overall Fit Rating

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Helpful?
Cali
california
Rated 4.0 out of 5 stars

too heavy for summer

1 month ago

husband says they are too thick for summer- his feet got hot. great cushion. medium is true to size for men size 9

Age:45–54
Typical Shoe Size:Mens 9
Yes , I recommend this product

Overall Fit Rating

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Helpful?
Tango
North Central Washington state
Rated 5.0 out of 5 stars

Perfect little sock

1 year ago

Lightweight, not thick, just enough wool content to keep feet warm, spandex to keep from slipping

Age:65–74
Typical Shoe Size:Womens 8
Yes , I recommend this product
Helpful?
Shoeguy
Rated 5.0 out of 5 stars

Warm and cozy socks!

2 years ago

I tried so many cheap socks from Walmart and other places but was disappointed because my feet would sweat and I’d have a lingering bad odor in my shoes and on my feet and I couldn’t use the same pare of socks for a few days. I found these and I love them! I can wear them for like 2-3days and they don’t smell from my sweaty feet and I love how they feel and support the feet. Best socks ever!

Typical Shoe Size:Mens 12
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large
Helpful?
1 - 10 of 64 Reviews

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