To put the WSD thing into perspective, my wife is about 5'5" and fits a 54cm Ruby perfectly. I'm a bit under 5'9 and ride a 54cm Trek and have about 2 inches less seat post showing than she does. I can barely get mine on to my Park repair stand. What size WSD would a woman 5'10 need? Who knows...maybe 58cm? That's just weird.

-Jeremy