They ALMOST fit, but I am a pretty small woman with a small face and the gasket at the outer edges of my eyes just doesn't quite complete the seal. For my face I prefer this model: AQUA SPHERE XP LADY or FEMME, which are kind of like a small snorkeling mask and give me a more complete seal. They are both great goggles, well made.....I just need a bigger face! I will keep the Kaiman's for a spare.
We have found these goggles very easy to use and fit each of our three very different shaped kids faces. My eldest, a competive swimmer, even uses them for races. Stay on after diving. Very easy for her to adjust on her own! I wear the adult version.