I have med/wide feet, my shoe size ranges from 9-10. I was apprehensive about ordering these, as I wear a 6 1/2 shoe and generally dont do well when I have to choose a full size. While the sound was fine, they are very uncomfortable to wear, as they fit quite tightly, and the padding around the ears does not keep the ears from pressing against the hard plastic speaker. ( DE PAPEL DE SAMSUNG ) EL CUAL ME ESPANTO MUCHO POR QUE PENSABA QUE ME DARIAN JABON O ALGO SIMILAR, OCEA UNA ESTAFA. This pair in particular runs slightly more on the narrow side compared to other models but i do not mind because I have average feet. Very well made, exceptional packaging, and great sound quality. The problem is the instructions, even if you get the right ones for the product (I did) they do not tell you what you need to know! Will purchase again! Additionally they are very comfortable! It turns out, the toe box is just a little larger than most Nike running shoes.