Get It Before Labor Day Weekend—Order With Free 2-Day*by 5pm MT 9/2/15



Smartwool designed the Women’s PhD Outdoor Light Micro Sock to suit a wide range of outside fun—from hiking, running, hopping on your bike, cruising to the gym—whatever the day has in store. Mesh ventilation zones in the arch and the wool’s natural anti-odor properties keep your feet nice and fresh, and thicker wool cushioning at the toes and heel spare your feet from high-impact adventures. The sock’s stretchy, soft cuff makes friends with your ankle and holds on for the ride.

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SmartWool PhD Outdoor Light Micro Sock - Women's

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Here's what others have to say...

5 5


  • Gender: Female
  • Familiarity: I've used it several times

This is my favorite summer running sock!

3 5

A Good Sock

  • Gender: Female
  • Familiarity: I've put it through the wringer

These are decent socks but nowhere near as good as the Minus 33 ones. They hold up well and are a good sock. If you want unbelievable comfort and wear buy Minus 33.

5 5

Great socks for a long hike

I bought these for my wife before a long backpacking trip and I wish I had bought some for myself! She was blister free after 20 miles of wet trail hiking. I was not so lucky with my cotton socks.

5 5

Very comfy

These socks are very comfortable for not being very thick. They are great for hiking. I haven't gotten any blisters wearing them.

5 5

Love them

I love these socks. They are lightweight and comfortable. Perfect hiking socks.

5 5

Like walking on clouds

Seriously, clouds. They're that awesome. I use them for hiking and I love them. I don't think I'll be able to wear any other socks for outdoor activities again.

5 5

jumping on the 5 star boat!

if you have another sock in your cart get rid of it and get these! This sock kept me from getting my standard ankle blister after a 18mi hike. these are worth every penny. Im a smartwooler for life.

5 5

Best socks ever

These socks kept my feet warm and comfortable on a rough 5 day canoe trip with rain and cold.

5 5


I love how these socks hug your feet--unlike other ankle socks, they never feel like they're going to fall down, and they breathe!

5 5

great in the mud

These socks endured a tough mudder. No blisters. Then cleanup The was perfect. Ready for the mud again.

5 5

Excellent Socks!

These are great! I also got the SmartWool PhD Running Ultra Light Micro Sock - Women's, but those are a bit tighter around the ankle so am returning them. I plan to get more of the Light Micro Sock.

5 5


Just like all the other reviewers I love these socks! Especially for the ''tongue' on the back - it makes sure that the sock stays in place, and the shoe will never hurt you heel.
I will buy more!

the oatmeal color is great, make my almost not existing tan exist. I'm a size 39-40 an M fits perfectly (they are true to size)

5 5

If it weren' for SmartWool !

Too many times I have left for the day saying I need to buy some more SmartWool socks. Our family has used them so many years. I'm crazy about the new PhD Light Micro sock. The label says "outdoor", but you can't take them off just because you plan to be indoors. Smartwools have been the family's go-to sock for many years now. We are glad the company can continually improve on already perfect sock design.

5 5

A Definite Must

I love these socks! Wouldn't go hiking without them. No more blister concerns and after spending a day with my feet in and out of water they dry much quicker than cotton socks ever could.

I'm also finding them to be great on the treadmill. Plenty of cushion and my feet stay dry.

5 5


these socks are great hiking socks..extra cushion in all the right places. I would recommend these to anyone...plan on buying more for myself!!

5 5

AWESOME socks!

love these socks! one of my roommates stole like 2 pairs from me...that jerk. anyways...the one i still have left are awesome! never lose shape and are cushiony and super comfy. buy lots if you can afford it!

5 5


50 miles in three day in Grand Canyon, these sock performed great

4 5

Great for multi-purpose

These socks are great! I've used them for biking and hiking and in both instances they delivered. They kept my feet well-ventilated...I didn't overheat at all. Plus, I really like the ankle height. Smartwool makes a mean sock!

5 5


Wow. these socks rock. They are no thicker/heavier than my regular champion athletic ankle socks, but the protection they offer is unreal. Goodbye blisters hello cushy lovin'...and the fit is incredible! I'm buying 10 more!