I usually get a 10. The leather on these are buttery soft so they almost mold to your foot. I spend a lot of time on my feet when Im working. Bought 2 pair and each lasted the entire summer snd still look great Using the paper guide found on the Aftershokz website, I was riiiiiiight on the border of needing the full size pair. The carabiner is nice for hanging off a bookbag if you want. Sentitele con un buon Ampli e mi direte. Fit as expected and they were very comfortable. love this would definitely suggest to buy it my cabinet was a tiny bit bigger than the measurements 33x19. The lightning port has plenty of room for most extra duty cables.