"Remember when a sock was just a sock? Gone are the days when your most pressing decisions were cotton or polyester, above the ankle or below. If your dogs aren’t equipped with the latest in sock technology (it exists!), you won’t be at your PR-busting best, whether you’re running an ultra or banging out burpees in the gym."
The PhD Run Ultra-Light Micro, made the list for the best socks of 2018 because it is "so thin that it's basically a second skin."
Read more from Outside Magazine: The Best Socks of 2018