Love these shoes.  Depending on the style of Keen shoe I wear either a 9.5 or a 10 (generally I'm a 9.5 in most brands).  I tried both and chose the 9.5 although there was not a huge difference my pinky toe doesn't stick out of the straps in the 9.5 like it did in the 10.  These do have a leather footbed that is not a cushy as other Keens with the eva footbed but that has not been an issue with me.  I have some issues with foot aches and plantar fasciitis but these are great and have given me no pain at all.  They also look great in my opinion.  Love the color.