![Amazon.com | Birkenstock Arizona - Birko-Flor Black Birko-Flor 40 (US Men's 7-7.5, US Women's 9-9.5) Narrow | Slides Amazon.com | Birkenstock Arizona - Birko-Flor Black Birko-Flor 40 (US Men's 7-7.5, US Women's 9-9.5) Narrow | Slides](https://m.media-amazon.com/images/I/61bWdN8XS2L._AC_UY1000_.jpg)
Amazon.com | Birkenstock Arizona - Birko-Flor Black Birko-Flor 40 (US Men's 7-7.5, US Women's 9-9.5) Narrow | Slides
![Amazon.com: Birkenstock Unisex Arizona Tobacco Oiled Leather Sandals - 40 M EU/9-9.5 B(M) US Women/7-7.5 B(M) US Men : Clothing, Shoes & Jewelry Amazon.com: Birkenstock Unisex Arizona Tobacco Oiled Leather Sandals - 40 M EU/9-9.5 B(M) US Women/7-7.5 B(M) US Men : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/51G4Aj4t9FL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Birkenstock Unisex Arizona Tobacco Oiled Leather Sandals - 40 M EU/9-9.5 B(M) US Women/7-7.5 B(M) US 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
![Amazon.com: BIRKENSTOCK Women's Mayari Sandal, Stone, 40 R EU, 9-9.5 M US : Birkenstock: Clothing, Shoes & Jewelry Amazon.com: BIRKENSTOCK Women's Mayari Sandal, Stone, 40 R EU, 9-9.5 M US : Birkenstock: Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/61AarOET6eL._AC_UF1000,1000_QL80_.jpg)