What is the bike frame size of the KBO Bike?

The frame size of KBO Breeze Commuter e-bike is 18";

The frame size of KBO Breeze Step-Thru Commuter e-bike is 17";

The frame size of KBO Ranger Cargo e-bike is 15.6";

The frame size of KBO Flip foldable e-bike is 16".

The frame size of KBO Tornado All-Terrain E-bike is 17.2";

The frame size of KBO Tornado Step Thru All-Terrain E-bike is 14.4";

The frame size of KBO Hurricane Road e-bike is 21".

The frame size of KBO Oasis Cruiser e-bike is 16.5".

The frame size of KBO Compact  foldable e-bike is 17".