Charge Plug

Thinking about getting a vanilla Charge Plug, and popped into Evans to check sizing. I'm 6ft, but the small seemed about right. The stand-over height of the medium was pretty much non-existent, am I missing something here, as other 6ft'ers are debating whether to go large or medium?

i'm 5'7" and small fits me pretty perfectly. there is this apparent short of SO height (just about an inch) but it hasn't caused me any problems so far