ie The black size 6. So with that, I do recommend if you are a half size to size down so they are snug, otherwise the sock like ability to keep stuff out might not work so well. Great for keys though. But I bought size 9 for my husband, who is usually size 9W/9M and I was concerned that they would fit too small. Rechargeable, can sit on cradle then grab and go bluetooth speaker. Returned a locally bought Sonos one speaker for this and it is so much better. Im usually size 45 or UK10 which I ordered but a 46 would have been a better fit. Cable length is very adequate. After about 5 days I wear them all of the time. Cons:- Heavy