Authentic Granada Birkibuc™ from Birkenstock. as far as fit. These birks have advertised to be on the narrow side. Although not a true narrow. I actually bought these for myself, I am a wide, so I wasn't surprised it was feeling narrow. To me, it has a deeper cup than regular birks all the way around. If you need any measurements, I am happy to oblige! • Made of acrylic and polyamide felt fibers, Birkibuc™ offers a textured finish that looks and feels like velvety nubuck. • The leather-lined, contoured footbed will mold to the shape of your foot, creating a custom footbed that supports and cradles your each and every step. • Flexible EVA outsole offers lightweight, shock absorbing support with lasting durability. • You will enjoy your Birkenstock sandals for years because they can be repaired, resoled or even completely renewed. • Heat Warning - Cork footbeds or EVA soles can be damaged by exposure to concentrated heat. Do not leave your footwear in direct sunlight • Made in Germany. Please don't hesitate to ask questions or for more photos! Thanks for visiting my closet!