These run small. I typically wear a 40/W9 and these are a little snug on width for me. I’ve worn them a handful of times. Purchased from Anya’s Shop: “These handmade barefoot slip-ons are designed by Anya to have a natural foot shape while still retaining the quintessential loafer style. Each pair is hand-stitched in Turkey by traditional shoemakers who use locally-dyed, chemical-free leather that only becomes softer and more supple over time. This is quality shoemaking, great style, and healthy shoe features all combined into one!”