![Amazon.com: Birkenstock Sandals ''Arizona'' from Birko-Flor in Black 40 EU / 9-9.5 Women / 7-7.5 Men : Clothing, Shoes & Jewelry Amazon.com: Birkenstock Sandals ''Arizona'' from Birko-Flor in Black 40 EU / 9-9.5 Women / 7-7.5 Men : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/51ZlCu88CAL.jpg)
Amazon.com: Birkenstock Sandals ''Arizona'' from Birko-Flor in Black 40 EU / 9-9.5 Women / 7-7.5 Men : Clothing, Shoes & Jewelry
![Size check. Left is 40 narrow and right is 40 regular. Had a 41 narrow in the past but got rid of them because they felt to big. : r/Birkenstocks Size check. Left is 40 narrow and right is 40 regular. Had a 41 narrow in the past but got rid of them because they felt to big. : r/Birkenstocks](https://preview.redd.it/3932wblqbjy51.jpg?width=640&crop=smart&auto=webp&s=be649bb4418cdca6724ef664fee72b85aed2968f)
Size check. Left is 40 narrow and right is 40 regular. Had a 41 narrow in the past but got rid of them because they felt to big. : r/Birkenstocks
![Birkenstock Womens Gizeh Thong Sandal - Black Birko-Flor - Size: 9-9.5 / 40 43691_40 - Jacob Time Inc Birkenstock Womens Gizeh Thong Sandal - Black Birko-Flor - Size: 9-9.5 / 40 43691_40 - Jacob Time Inc](https://cdn11.bigcommerce.com/s-msby3f18ji/images/stencil/1280x1280/products/3006/4869/43691__31713.1639080262.jpg?c=1&imbypass=on)