SmartWool PHD Outdoor Light mini socks are made with what they call "indestructawool technology", these merino wool socks should last a long time. They fit me well. The light cushioning helped my feet deal with an all day hike while allowing my feet to breathe properly.
Sock construction is 58% merino wool, 40% nylon and 2% elastane. The socks are ankle high and are designed specifically for hiking. They also are available in a charcoal color. I like the feel of these socks, even in hot weather.
Wearing them while hiking in the hot sands of the Great Sand Dunes or when kayaking in Florida, I felt quite comfortable. I even slept in them at night. Rinsing out is all that was needed on an overnight trip. Walking through a stream with them on, my feet felt dry within a few minutes.