Sadly, the sandals available through Amazon are very narrow. These do it so well that it hinders sound quality. I have a special briefcase for my international travel and I always keep my travel adapter in my briefcase so I dont forget it. I am using it for iPhone8. Theyre billed as boat shoes and will work well for that purpose. But the clip is made from cheap metal and has a narrow throat to push a small strap through. Best of all, the shoe is very smooth inside without the slightest hint of friction when wearing without socks. They fit in my ear well too, and it helps that there are different inserts to get not only the fit in your ear canal, but also a fit for the middle "ring" of your ear (helix?). Im 56", 160 lbs. I will be taking them with me for our upcomong vacation to Carlsbad.