I wear a Size 13 and purchased a size 13. I just got these and I can already tell they are going to be a long time favorite for me. Cons: - A little more expensive than the competition. I had the same problem as others on here where the 3. - Buttons and volume dial all worked greatCONS:- The "vibration" feature in theory wouldve been a fantastic way to immerse the player in the gane, but it unfortunately only takes away a bit of the sound quality from what I can tell. Upperfit (the name of the seller) sent me an email with these supplemental instructions:"IMPORTANT : If facing an issue with pairing, turn off both earbuds. It is well made, good quality and comfortable to wear daily and or at the gym. The attractive brushed aluminum frame is very attractive, well padded and oh so smooth to the touch. Da Amazon mir nun kein weiteres Ersatzprodukt schicken wollte, bestellte ich mir die Kopfhörer erneut, da ich bis Anfang April wirklich begeistert und überzeugt war von diesem Produkt. So organized now!