Purchased from Anthropologie. They do say narrow on box. I have regular width feet and did not find them to be too narrow but would size up if worried about that. Shoes are listed in EU size. I will list in US size. Poshmark doesn’t allow me to do split sizes so please see last photo. I’m a size 9/9.5 and the EU 40 fit me. EU 36 = listed as a 5 EU 37 = listed as 6 EU 38 = listed as 7 EU 39 = listed as a 8 EU 40 = listed as a 9 EU 41 = listed as a 10 Perfect for fall Trending, tik tok, influencer, cozy Box may show slight signs of wear from handling Product Details Style No. 87670303; Color Code:  Suede upper, insole EVA sole Slip-on styling Imported Birkenstock This iconic German brand has become a wardrobe staple, thanks to an incomparable fit, laidback comfort, and a commitment to sustainable sourcing. Throughout the brand's many innovations, attention to craft has always stayed true: Each footbed is designed to adapt to the wearer's unique step, providing support no other shoe can.