I'm a woman, 5 foot 5 inches, with normal-sized ears. (2.25 inches at it's widest point (from the helix to the lobule) and probably 1.50 inches where the phone should wrap around the ear (the outside of the concha). I found this product to be waaay too big. I never got to try it out for sound once I determined it was too big. Alcohol wipe and a quick return!