These simple sandals are comfortable and wearing them full time for a week showed them to be comfortable and practical. I do wake without in on but it is comfortable to wear, easy to use and good sound from them. I had a missing peice first of all. I usually had to switch to my Sennheiser CX300 II Precision to listen to music when I want the topmost fidelity. Yo de normal uso la 38, y me pedí talla 37 y me van perfectas Quality of earphones are based on individual?s perceptions of bass, clarity and treble. It?s a very nice piece of plastic. 5-7 and the amazon 9-10 more like US 7. I know that they are not intended to be worn outdoors so I will wears these slippers as soon as I enter the hotel room until I leave each day. There is virtually no traction with them at all.