Frog 78 26 Inch(For subscription only read on more below about subscribed bikes) The Frog 78 kids Hybrid Bike is the ideal multi purpose, geared bike for 13+ year olds with a recommended inside leg of 72cm 88cm. It is equipped with age specific components, including a quick release saddle for the perfect riding position and FrogFit Technology youth specific 8 speed gear shifters with short lever travel and ultraslick cabling making changing gear and undulating rides