Long-time Birkie user here. The Fitory sandal is an excellent value---much cheapeer than the Birkenstock Arizona equivalent model.I found the size 9 (my normal sie in a Birkie) is just slightly too large for me in the Fitory sandal, so I returned the size 9 Fitory and bought a size 8 instead. The Fitory sandal has slightly less arch support compared to my Birkies. I prefer the higher arch support of the Birkie, but at the reduced price of the Fitory sandal I am keeping it as "backup" sandal.