Smartwool is literally the best sock ever.

Comfortable

Great design, fits well, perfect height!
Very comfortable. Bought several.

Bought these for a friend, he had this to say:
Favorite sock for warm weather running - great balance of cushion, breathability, cut, and feel inside the shoe (no slippage). Not to mention the freedom from funk that comes with Merino. Great socks.

I would agree that at first I was a little skeptical and thought it was just a way to add on some extra cash to the price tag. But once I tried them out, I immediately realized it really does make a difference in how the sock forms over your foot and adds to the performance. I highly recommend them.

Very comfortable sock for running, good ankle height!

I like thin light weight socks for running, these work really well.

Not a runner, but I wore these with some trainers at the gym to replace some old "no show" socks that slid off my heels and these did the job. No heel slipping here! They were so thin I could barely feel them, but i did miss the toe and heel cushioning- personal preference. My feet did not get too hot or sweaty. SmartWool did a great job on the moisture wicking and temperature regulation. They have been through a couple of washes and still feel like new! will be buying more.

Most of Smart wool sock cut is either to low like the mini one or very high crew socks. This is more like normal 3-4 seasons cut, high enough to cover my base layer bottom and not too high and not too warm like crew socks only made for winter. This is more natural cut socks. I like it.