I have a couple of pair of Rockport shoes and both are size 10 and are just right. I didnt get these for workouts but actually to use with my computer mainly for video conferencing. 5hr rides. Doesnt look too bad. A replacement battery (2) compensation from the company would be nice. Size up twice! That child must be a BEAST cause the 6 years old I purchased for his feet is nowhere NEAR 9 - 9 1/2. A great cheap investment to protect a VERY expensive investment. Si tus gustos son más “audiófilos” y quieres escuchar rock, jazz, música clásica o derivados, las mejores opciones son los ATH o los mismos Plantronics con ecualización "brillante". But I may have the Cabrillos repaired just in case.