Comfort, support, fit, moisture control and the attributes that make this sock the best I've ever worn. My first purchase of this specific sock was made in Steamboat Springs in Allen's Clothing store when Point6 was first introduced. That was 2012 and now 8 years later I still wear them, a little worn but wearable. I've just ordered two more pair of the same sock. I'm now 73 years old and walk 5 miles a day. This sock is my choice to wear for a really comfortable experience!
These socks perform really well for all day hikes and runs to keep my feet comfortable, even on sweaty days. Wool is my go too and the nylon blend increases the wool's performance without increasing stink!