I wear a size 9-10, so I got the large. I LOVE them. This one would unmute I could tell the mic was picking up sounds but again my computer (a MacBookpro) was not recognizing the mic. I think I just have to get used to them. The unfortunate thing was the red bead (as you can see in the picture) was why I bought this set in the first place. Comfy, good value, and actually really cute! If you have wide feet you know how difficult it can be to fine any well made as well as comfortable sandals. Otherwise the sandal looks quite nice and seems to be very well made. Other than that, I like it and Ill just have to keep boots on the floor. This will work with the Thule T Bolts with a little modification to the hard rubber strip.