SmartWool Expedition Trekking Socks

Priced: $20.95 Rated:   - 5 stars out of 5 by 39 reviews.
SmartWool Expedition Trekking Socks
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SmartWool Expedition Trekking Socks - Recommended for hard-core backpacking on rough terrain, SmartWool Expedition Trekking Socks now feature wool on wool (WOW) technology for greater durability.

Fiber Content: 80% wool, 19% nylon, 1% elastic.
Country of Origin: Imported


  • Flat-knit side panel reduces compression for a better fit and max ventilation


  • Merino wool naturally wicks moisture for dry comfort
  • Wool-on-wool construction in the heel maximizes the lifespan of the sock
  • Made of 77% super-soft Merino wool for no-itch comfort and warmth, 22% nylon for durability and 1% spandex for dependable stretch

Support and Cushioning:

  • High-density footbed provides extra cushioning for improved shock absorption and durability
  • Arch area is knit with elastic for increased support and comfort; protects against shock and abrasion


  • High-density knit sole and instep guard against abrasion, shock, lace pressure and blisters
  • Smartwool fibers regulate body temperature to keep you warm in the winter and cool in the summer
  • Discount will be applied when you check out. Offer not valid for sale-price items ending in $._3 or $._9
  • The 3x rib top with elastic holds the sock in place
  • Smartwool Merino fibers are naturally odor free
Mountain Gear
Cushion and support your feet while reducing compression from laces with the SmartWool Expedition Trekking Sock that provides padding against shock, blisters, and abrasion.


These thick, natural wool socks provide extra dense cushioning for warmth and comfort in cool weather.

Made in USA.

Massey's Outfitters
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Average Price History: Price History
Review RatingNumber of Reviews
Country of Origin:USA
Fabric:77% merino wool/22% nylon/1% spandex
Material:80% Merino Wool. 19% Nylon. 1% Elastic
Sock cushioning:Heavy cushioning
Sock height:Crew
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SmartWool Expedition Trekking Socks Reviews:

Positive Reviews:

Comfortable, but a little hot

I wore these socks to hike the Pennine Way in England (280 miles.) I bought them as they are the thickest socks as I'd be hiking up to 18 miles per day.
The design is great, they pull in on the arch to give supprt, have padding right where you need it and fit very well. Comfort wise they are excellent.
My reservations are that the socks would compact thin on the heels in the day, taking out the cushioning. This problem would partially rectify itself when they were washed, but not fully. My other issue is that in my full grain leather boots they were hot- my feet were VERY sweaty when I forst got them versus my Thorlos. However, I kind of expected this as I bought the thickest, heaviest sock for maximum padding. This alleviated in time and I 'd not regard it as a major issue.
Overall they are comfortable socks, good performers, and Im happy with them.
Drumming Moose at REI on 09/09/2007

Great wool sock!

I've had some of these for up to a decade, and still put them on my Christmas list every year. The older ones get a little stretched out over time (again, we're talking 10 year old socks), but are overall extremely durable. I've only had one or two pairs ever wear through in the 10 years I've been wearing these, and I wear them daily in the winter. I have some SmartWool Mountaineering socks as well, but prefer the slightly less bulky and slightly shorter Trekkers. They do cost quite a bit for a sock, but the durability offsets the expense. I only need one or two new pairs a year to maintain my "herd" of SmartWools.
Santa Cruz Adventurer at REI on 12/12/2011

Smartwool - Best Socks on the PLANET

I love the wild patterns and colors - those 10 degree and below mornings it is REALLY HARD to get out of bed at 4:30 AM, pull on heavy fleece lined riding britches and layers of clothes but the Smartwool line of hiking socks are amazing and the colors are a spirit lift and a source of smiles and giggles at the barn when the boots come off. I have recommended Smartwool to my riding buddies, starting them off with their first pair as my treat, and we are confirmed Smartwool fans. After the barn, time to change into work clothes and another pair of Smartwool socks for the office. Love them.
Peg Briden at REI on 12/12/2013

Like heaven for your feet.

I bought a pair of these sock for use while backpacking but i ended up using them about every other day. I probably wore and washed these socks 150 times before they finally wore a hole in the bottom. I now have three pairs and rotate them so i have a fresh pair everyday. One of the simple joys in my life is putting on a clean pair of these socks every morning. I've done lots of hiking with them and never had any blisters and i don't use them with liners. They are thick so i wear a half size bigger in shoes.
Bsole at REI on 01/01/2009

Awesome for Afghanistan!!

I was issued SmartWool socks in 2003. I've worn these socks on multiple trips through the mountains of Afghanistan. There were times where I would wear the socks 3-4 days in a row and they would still outperform any other sock I've ever worn. I still have the same socks I was issued in '03 and I just now in 2010 have a small hole in them. I have ABUSED these socks to the fullest. If you want to send a care package to a loved one "down range", send them SmartWool socks.
jwaya at REI on 08/08/2010

They provide the cushion

I really believe the cushioning from these socks protects my feet. I buy my running shoes, hiking shoes and golfing shoes 1/2 size bigger so I can wear these socks comfortably. My feet are doing so much better now with this extra cushioning. If you are sitting around the office all day, I would not recommend these socks, but for any activity like golf, running and hiking, I highly recommend them. SmartWool makes great socks. SmartWool socks are not cheap, so I wait for sales and then they are pretty reasonable.
Muskego Runner at REI on 06/06/2013

comfy and durable

I rely on my feet for a living as a field technician and wildland firefighter, so it’s important to me to keep my feet happy and blister free. Since discovering Smartwool Expedition socks 8 years ago, my feet have been much happier than they were with other brands of socks. For extra comfort I couple these with a thin sock liner. Believe it or not, my first pair of Smartwool Expeditions are still in use although they are very thin and I’ve got a dozen or more in rotation.
dalaimama at REI on 09/09/2007

The Best Hiking Socks

I wore 4 pairs of these on a 10-day trip up Kilimanjaro. They were the best, most trouble-free piece of equipment I brought. They kept me warm and comfortable but didn't stink despite the harsh environment. They're great in warm and cold weather, and work well for lounging around the house in winter. I've worn them on miserable hikes in the pouring rain where these socks were the only bright spot of the day. I recommend them to anyone looking for a relatively heavy hiking sock.
Ethan at REI on 04/04/2008

As named, good for hikes and treks

These are good for heavier than casual use. So when you get out to the mountains. They are borderline thickness for casual use.

I was a SmartWool convert from many years ago. I like the older models from about 8 or 9 years ago though. They had awesome wicking. These newer ones are great, but the older ones were amazing. Like you had data center class air-conditioned vents on your soles.
gearjunky at REI on 09/09/2007

Luxury for your feet!

These socks are so plush and comfortable. I use them primarily in cooler weather and for outdoor activity. After a long day on your feet out in the elements is where you truly appreciate smartwool performance. Easy to care for however if you are line drying these socks they do take a bit longer because of their bulk. Bottom line is my feet stay warm, dry, and comfortable all day long.
Given2Fly at Eastern Mountain Sports (EMS) on 01/01/2011

Negative Reviews:

too big

Love the sock--the thickness, the feel. But it is too big---not true to size like your other socks. Also, the only option was navy---I'd prefer gray and/or black.
Rheua at Eastern Mountain Sports (EMS) on 01/01/2007

Poor performance

After 5 day hikes, socks developed holes along the top seam above the toes. Very disappointed in the performance of these expensive socks. REI brand much better.
Emerine Kid at REI on 12/12/2012

Am I the only one?

These socks make my feet sweat like crazy. In the fall in the winter. Do I need a liner? Also wish they were more form fitting...tapered.
lukethedrifter at REI on 11/11/2010

Neutral Reviews:

over priced - poor quality
KCOAG at REI on 03/03/2011