They fit my average size head well, but if they clamped any harder I think wearing them for more than about half an hour might be a problem. Ive already washed them twice withing a month that i got them. Ive found cheap headphones at gas stations for $10 that sound better than these. Youll need to find a product thats right for you, however, you can never go wrong with a company like Anker who takes so good care of its customers. I finally found the perfect earbuds for working out. I have also charged the case 2-3 times since buying them with heavy use. I loved her and her weirdo tendencies. The only downside is they are heavier than I expected, but thats ok, will work out my legs. This was a big waste of money! 5) fit perfectly.