I bought these for snowboarding.
I am a uk 8 These socks are slightly big on me. Even though it says 6-11 the foot part (ie heel to toe) is way long..
Once on and in the boot however, the tightness around the calf/ankle makes up for it and it doesnt feel uncomfortable or fall down. There was just a wrinkle of gathered material on my heel.
Overall pretty good especially for value, shame they made the foot part so long, I dont get why, as it's stretchy material!!