The way I know how to measure frame size is by measuring from the center of the cranks to to top of the seat tube.
I ordered a 16" bike from Halfords but the seat tube is only 9". On the box it says 16" x 9" what???? sso where does the 16" come from?
So my neice is 115cm tall. According to halfords size guide a 16" will be fine for her since her daddy has got her a 14" but thats in london.
Is it me thats order the wrong size or has the oem packed in the wrong bike?