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  • Indestructawool construction strategically places merino wool and reinforcement fibers where they are needed most for durability and comfort
  • 4 Degree Elite Fit system uses 2 elastics for greater stretch and recovery to keep the socks in place
  • Light cushioning offers impact protection on the road or trail, while the virtually seamless toes offer enhanced comfort
  • Ventilating mesh ensures maximum breathability, thermoregulation and moisture management
  • 3.75 in. overall height

Made in USA.

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View all Smartwool Men's Hiking Socks

REI membership


Best Use Hiking
Fabric 58% merino wool/40% nylon/2% elastane
Sock Height Ankle
Sock Cushioning Light Cushioning
Moisture Wicking Yes
Gender Unisex

Size chart

Rated 5 out of 5 by from Great lightweight PhD socks Breathable wool blend. Super comfy. Go for the mid weights for nice padding or these for a cooler feel slightly thinner, although I have no problems adjusting to whatever hiking shoe I am wearing. Both types of socks fit the same. VERY IMPORTANT: Buy-at East-one size up. I wear between a 9½ - 10 (closer to a 10) and according to label on Smartwool So is I'd wear a Med. NO WAY, I always get the XL and they fit absolutely perfectly. I had to learn the hard way, but buying "my size" and having to return because they shrink a bit (even with cold wash and line dry-so just a warning. Buy Big! You won't be disappointed. Stay cool and odor-free when hiking and just a great all around sock. My favorites!
Date published: 2016-11-07
Rated 5 out of 5 by from Great sock! Super soft, warm and fit really nice. No blisters while hiking. Expensive but worth it. Good for cooler weather. I would buy again for sure.
Date published: 2016-04-03
Rated 5 out of 5 by from Love these socks! Wow, what a great pair of socks. I have a similar pair of Darn Tough socks that I really like but gave these a try to compare and I like them even more. Lightweight and cool but also very form fitting and comfortable. Love, love, love these socks. Give them a try, you'll be glad you did.
Date published: 2016-04-08
Rated 5 out of 5 by from What a difference I usually wear a pair of light wool, crew length hikers with my full height boots. Recently with temperatures averaging 95+ every day, these socks have been the answer to the swamp foot problem. Great fit stays in place all day.
Date published: 2016-07-10
Rated 1 out of 5 by from wore holes after three uses These are the most expensive socks on a per-wear basis. After wearing them three times, they developed threadbare spots in the gray area between the cuff and the black heel.
Date published: 2016-09-24
Rated 5 out of 5 by from Great for hiking! I like SmartWool clothing and like the socks I purchased. They are comfortable, perform well and keep their shape.
Date published: 2016-07-08
Rated 5 out of 5 by from Good buy Great feel, great fit, very smooth and comfortable. Feet stay dry but not too warm. Will be going back for more.
Date published: 2017-04-24
Rated 5 out of 5 by from Comfortable. Also...comfortable I've normally worn the "other" big name brand and am extremely pleased but decided to try these for some variety for use under trail runners. Very pleased I gave them a shot. They are far softer than I ever imagined and incredibly comfortable. Fit is spot on according the size chart. While I can't speak to the durability because I haven't owned them long enough, the comfort alone makes them worth the purchase price. Highly recommended.
Date published: 2017-06-05
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With these socks do you need a sock filer or is that made extraneous by the type of sock

Asked by: Kdavis
Did you mean sock liners? The PhD Outdoor Light Mini Socks can be used with sock liners but it is not necessary.
Answered by: REIservice
Date published: 2017-04-15
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