I have a reasonably small head (57, 145lbs), but I like to wear them tight so that no sound escapes. Have had negative comments about quality of sound from microphone when using with phone, but testing recording on a laptop seems very good so most likely a phone or phone compatibility issue. Gorgeous must say, go for it. *EDIT*I have returned them for a half size larger and they are lovely. **Do Not Use Any Harsh Chemicals To Clean Them Or Any Sharp Object**There are "Preamium" earbuds, that has a filter cover inside the memory foam earbuds, to keep earwax out from getting into the fine metal screen. Each set of Buds come with three sizes of the in-ear pieces and three sizes of the wing tip to make it truly customizable. Then started my L ankle pain. He always chooses to wear these over his tennis shoes! We could have received two men’s belts and saved 2 weeks and $10 . they werent.