The dash extra lights are great. I love running in them for speed work. Oddly enough that annoying sock slipping past the heel only came when I wore them walking the dog... I'm guessing it was a change in my gait but otherwise the socks don't really slip and breathe incredibly well.
Right off the bat these socks feel more sturdy and reliable than the competition merino brands. They wick moisture and reduce smell just as good as the rest of them. The one complaint I have is that they're not the softest things on the planet. But honestly I'll be getting more of these despite that.
I’ve worn merino wool socks almost exclusively for over 15 years. When I read that the original founders of Smartwool had started a new company I wanted to try them. The feel of socks is great. The seams are flat and hardly noticeable and feel of the merino is excellent. I’ve only worn them 3 or 4 times so I can’t comment on durability yet, but I will be buying more.