Love the silicone at the top of the calf to keep the socks from slipping down.

Remedies hot spots on the heal. Little silicone strip locks your foot in place.

Great socks for skiing. Fit great, nice and thick where they should be, awesome little silicon strips to keep the heel in place in your boot.

Pretty happy with this product, so much so I bought 2 more. Keeps my heel in when going uphill, doesn't bunch, supports foot in the right places. It's the only sock I use in the backcountry.

My previous favorite backcountry sock was the Smartwool x Backcountry.com socks of which I owned several pairs. Figured I’d give these a shot being as Cody Townsend is a beast and I’m addicted to the Fifty. Turns out now I’m going to have to buy several pairs of these. I’m 6’ 0”, 200 lbs, size 11 shoe and the Large size fits me perfectly. The socks are very long/tall which is a plus for me. Coupled with the interior silicone bands they never slide down. They’re not overly thick or thin and have padding where necessary. My feet stay warm, and they do everything that you would expect from a nice technical sock. Can’t recommend them enough!!!