Seriously, it doesn't take someone w/ a PHD to tell you to use the SmartWool PhD runnning socks, they are great.

This Smartwool product lives up to everything I have come to expect from Smartwool. These sock offer everything that a runner could want great durability, comfort and plenty of wicking action to keep those blisters at bay. These socks double the effectivness of a great shoe ,and have removed the worry of whether or not my feet will make it through a race.

I became a fan of smartwool after buying several pairs to hike the Inca Trail in Peru. These socks are great for running or everyday use. Will buy more to add to my collection!

I bought the lights and the ultra lights and they both rock! They keep my feet warm and dry. Walking, running, working, the gym. They work for everything. I'd stock my whole sock collection with them if they weren't $13.

It's cushioned just right, in the right places. I even wear them with my work boots-feels like superlight insoles.

I have looked high and low for the perfect marathon sock, this is it. Never sags, not too tight, no blisters, just enought cushion, great wicking.

Thanks Smartwool!

I have looked high and low for the perfect marathon sock, this is it. Never sags, not too tight, no blisters, just enought cushion, great wicking.

Thanks Smartwool!

I am finding myself wearing these as a sock within a sock. Tan lines are not a big thing with me, but the venting is, and these do the job. Remarkable. Moisture is serious where I live and my feet feel dry. What more can you ask for?

i've owned a pair of these, and 2 pairs of ultra-lights for 2 weeks, and i haven't worn other socks the whole time (i've washed them of course). i wear them to work unloading trucks, and they keep my feet dry, warm, and i have no sore spots on them. i would easily recommend these socks to anyone i know. actually i already have. i plan on buying more.

These socks breathe well and provide a little cushion for your feet. They will not fall down into your shoe. They don't take on stink. All around, once again, a great merino product.

I like black socks, but couldn't find any women's so I ordered the men's. Love the socks, love the color and they feel awesome.

Awesome running/exercise socks. I was concerned about Wool in warm weather, but the wicking keeps your feet cooler than regular cotton socks regardless of the temperature... Gotta buy some more.

these are my favorite racing, training, casual socks. I have worn them so many times, in so many conditions, wet, hot, cold, cold & wet, hot & wet, you name it, these are fantastic. Bad socks can ruin your runs, these are awesome.

These are perfect for nearly all outdoor activities! I wear them primarily for golf...they are great; low, moisture wicking, durable, and don't slip into my shoes. I typically walk and carry my bag, so those are very important attributes.

I like this thin version of smartwool running sock that fits low in the shoe, but does not fall down. LOVE smartwool socks.