They will NOT fit Croc RX shoes which are no longer made - my husband is a men's 9 and I am a women's 11. We both wear the same pair RX - but even he agrees - they do NOT fit the same - they are MUCH tighter - in fact my toes hit the front of the shoe and feel squashed. The toe box is not only smaller, but also narrower on all sides. Since they don't stretch, this isn't a problem or a cause. I am VERY disappointed and have to go to the store to try them on as before - now that they have been resized. Send an email and replay the game! We don't like the bumps they put in the shoe bed (RX and these) - they say it massages - but they hurt - so we need to put a felt insert in the crocodiles to make them wearable (inserts come with my Propeets , with which I don't need them).