Ran up on this and called about it... guy said he thought it wasn't big enough for an adult... I asked him if it was a 16" or 20" bike... said he didn't know and wasn't at home where he could look at it... supposed to send me some better pics and measure the tires (or get me a tire size) when he gets home in a couple hours...So... in the meantime... anyone care to speculate weather or not it's a 20" bike or a 16" bike???? And yes... I'm refering to the Coppertone Schwinn behind the blue girls bike...