Id say they run a little large because usually Im a 7. I have three, so this isnt an anomaly. bad sound quality. 5-8, or 38 European. Ive used it outside to do some yardwork and it still sounded clear and full while I worked away in the distance. Sent them back straight away. Easy to adjust. The sound here is perfection. I wonder if I received a defect or if the quality of the shoes are this poor. The cups will basically be on your cheeks.