I work outsids a lot, in the pacific northwest. I often go through two sets of socks a day.
For years I wore Thorolo , lightweight hiker socks. I wore them all out over 5years, and have not been able to replace the lightweight ones I wore.
So I am switching to thses, light weigth smartwools. I hada pair that last about five years.
I really like these socks, I only wish they were a bit longer to cover the calf more. Like my old thorlos.
I have a short, wide foot. Some socks pinch , these socks do not pinch my toes.
 I was them in cold wash, hang to dry. I expect 4-5 years of wear.