I wanted a warm cozy slipper and since it?s hard to find slippers in 1/2 sizes, I chose the slip on version and went with size small which is US size 6. I do add additional straps to this bag only because those straps are bright colors and I want people to be able to SEE the bag hitched behind my vehicle. I had to admit I rather enjoyed the analogy. These things are unbelievably comfortable and cozy. Good phones and comfortable, but 4 stars because the sensitivity is not great. Im coming from a full worn-out pair of A pesar de haber instalado de manera correcta el producto, este se siguen sintiendo endeble y no aguanta una bicicleta para adulto. Just one button. I have a 6 yr old Jabra Big Jambox Bluetooth speaker that sounds better than this speaker. What he likes most though, is how comfortable they are.