I put on the 43 with a wide foot, 42-43 fits me right, then I had already taken the shoes in the same size and they are a bit too big but I had kept it anyway. (It must depend on the model) By cons in terms of quality and durability no complaints, I have the shoes for 2 years I wear everyday home at night and also regularly the summer. Flip flops close fitting arch, ideal for those who like me are flat feet and Achilles tendon tendinitis.