I struggle to understand who in their right mind thinks that the same socks can fit someone with a size 6 foot and a size 12 foot. I am an 8.5 shoe size and can not stand socks that don't fit. I hate socks that spin around on my foot, bunch up in my shoes, slide down, or cut off the circulation to my toes. I never thought I would see the day when I spent this much for socks but after years of frustration and discomfort I had finally had enough. These socks are wool and a nice thickness, I tried some other Swiftwick socks that were too thin for me but these are just right. I bought enough to have a fresh pair every day and will likely replace them as they wear out because I am finally not fighting with poorly fitting socks.