I wore these for only one day (about 4 hours). I usually wear a size S, around 23.5cm for sneakers and 22.5cm for sandals (otherwise my toes stick out...). These sandals are trendy, aren't they? I bought a size S, but unfortunately, they were a bit too big for me, so I'm selling them. 《My Personal Opinion》 I think they would probably fit someone with a narrow to normal foot width who wears a size M. Since it's considered good balance to wear sandals a bit small, I don't think they're suitable for someone who wants a loose fit even if they are a size M (or someone who wants to wear socks with them). They are in near-new condition, but I wore them once, so please consider them "used." (If you are looking for something equivalent to new, please do not purchase.) ※ I plan to ship them via some kind of courier service. ※ I will ship them in a box from another brand that the shoes came in, not a cardboard box. ※ I will not be offering a discount. ♦ Please be sure to check and agree to my profile 【必ず】 before purchasing. ↓ Other items for sale are here. #lunarshop Thank you! Color...Black系 (Black-based)