PhD Outdoor Heavy Crew Sock
Ensure solid comfort when you tackle the trail in chilly fall weather with the SmartWool PhD Outdoor Heavy Crew Socks. Designed to fit smoothly into your hiking shoes or boots, these cozy socks keep your feet dry and comfy from the relative warmth of the trailhead to the biting cold of the summit.
Merino wool regulates temperature so your feet don't overheat during arduous uphill stretches or get cold at the campsite. The wool is blended with nylon for enhanced durability, as well as a touch of spandex for movement-conforming stretch. Smartwool's 4 Degree Elite Fit System ensures your socks won't slip or bunch during your trek, and heavy cushioning makes these socks ideal for extended journeys in rugged backcountry terrain.
- Heavyweight performance for cold weather
- Soft merino wool regulates temperature
- Blended with synthetics for stretch and durability
- Flat knit toe seam relieves pressure points
- 4 Degree Elite Fit System won't slip or bunch as you walk
- Heavy cushioning is ideal for long hikes on rugged trails
- Item #SWL00N2
What do you think about this product?
March 14, 2020
Smartwool, please manufacture more sizes. I bought PHD and trekking size M, because I wear size 7.5 male, but both on the small size. I think they will perfectly fit size 7. The sizing guide says it is for 6-8.5. How on earth, will it fit 8.5? Really funny. Otherwise, they feel good.
Rentsendorj 99016346 Y.
December 4, 2018
Warm and Functional
These socks do it without being overdone. With just the right amount of padding, these bad boys are my go to for hiking, lounging, and work, they do it all with style, without the overdone bulk discomfort some other wool socks add. Definitely thick and amazing, but functional and versatile.
August 23, 2018
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March 28, 2018
Learn More: Smartwool PhD Socks
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March 8, 2018
Great heavy weight sock!
I love these socks, best mountaineering sock I have ever worn. These socks truly make a difference in my performance on the mountain. Made of Merino Wool, they are very comfortable & durable. Super warm! I've been buying this brand for over 10 years and am still wearing my original pair. Highly recommend !
February 27, 2018
November 21, 2017
Go to hiking socks
Very comfortable socks that are not too hot
November 6, 2017
Warm, but not too warm
I am not a huge sock wearer, but I have to pop some on in the winter. These are awesome for my boots that have no insulation on winter days. They are definitely too warm for me to wear any other time. I assume they are awesome for long distance backpackers and mountaineers. They have lots of cushion and would hold up over miles.
October 2, 2017
From Winter Hikes to Pub Crawls
These socks are extremely warm, I initially got them to walk my dog in the winter..I now wear them under my pants nearly everywhere in the winter. They are the perfect all round winter sock!
September 19, 2017
Your Toes Will Love 'Em
Rotated through two pair during a full season of hiking and climbing in the Cascades.... No complaints! I use these without a liner sock and have had no problems. They don't stretch out and bunch up or slide down during use and don't show much wear on the heel and toes, despite heavy use.
January 20, 2017
love these socks!
super soft and warm! My go-to ski socks! I have a few pairs and I use them every time I go snowboarding! They're also very durable
January 6, 2017
Never a blister
This is my go-to sock for serious hiking and climbing in boots. I don't use any liner sock. I hiked 13 miles in Glacier National Park one day last summer in Trango S Evos and no blisters or hot spots.
January 1, 2017
Extremely warm without being bulky
I put these socks to the test initially indoors and my feet were actually too warm. This is a very good problem to have. These socks fit very well and they do not slide down as Smartwool claims. I wear these in my Northface Chilkat boots and my Bauer Supreme One80 hockey skates. I was pleasenly surprised how well they kept my feet warm. My skates do not provide much insulation but I skated for hours in 20 degree weather with warm feet. I highly reccoment these socks. All around good fit and great build quality. Defiantly worth the money. These Smartwool socks deliver extreme comfort due to padded zones on the foot bed. Mostly importantly though, they will keep your feet warm! These fir true to size. I am a 9.5 and the Large fit perfectly.
December 28, 2016
Smartwool socks are the best!
Smartwool socks are some of the best socks you can put on your feet! Super warm, keep your feet dry and comfortable! I gifted these for Christmas and my step dad is hyped!
November 30, 2016
Warm and Durable
I use these in the winter with my waterproof boots. Help keep things warm and dry.
September 15, 2016
Hiked a few times with tem. Definitely do the job. During the day, even when it was still cold, I had to put something thiner since they are actually very warm.
January 7, 2017
Is socks unisex? Looking for female version of socks.