I bought the socks using the size measurement chart they fit well i use them playing golf and they give me good support very comfortable but always go up a size from normal size as they are tight they were good quolity but as i have big ankals they were for to tight so had to send them back seems to have helped to reduce the achilles tendon pain i have already bought the knee supports marvellous so it followed that i would buy the ankle supports haveing had ankle trouble for many years and tried all sorts of supports i bought these i have been wearing them for a few days now the results are amazing i can walk a fair