I bought these socks because I had very big problems with blisters playing squash.
After trying other socks from Hilly, 1000 mile several models and Injinji Tetrasock performance, I found these ones to be the best solution against the blisters. The Injinjis are much better to combat blisters or hurts in your fingers, while these ones have been the best solution for the metatarsal zone blisters.
They provide also a great cushion, and the colour is navy. Maybe a bit strange for sport socks. Would be nice to find them in black or even better in white. Anyway, they match quite nice if you wear in blue.
Regarding other user's review, my size is 9 and I bought 9-11, and they have a wonderful adjust for me. Not too tight. Even if I would have a 10 size, they would fit me. Don't know with a 11.
Being of ultrawool they are not thin, but you don't feel much hot in your feet. They are not the coolest socks definitely, but they don't create a problem in heating.
Wonderful socks if you have blister problems and providing great cushioning and confort.
1000 mile uses to make marvellous socks and from all their different models I have, I prefer these ones.