-20" children's bike -Very lightweight aluminum frame and fork -Weight only 7.9 kg (without pedals) -Growing "Adaptive Frame": very low top tube and seat tube extends far back when adjusted -8-speed Shimano Altus gear system with twist grip -Inside cable routing -Tektro V-brake front and rear -Extra small brake levers from Tektro. Adjustable reach -Handlebar with ergonomic 12° backsweep -Seat post with extra large adjustment range -Narrow Q-factor -All-round tires 20x1.75 from Kenda. Ideal for roads, gravel paths, and easy trails. Very low rolling resistance -Lightweight tubes with Schrader valve -Low bottom bracket -Short stem without edges -Child-friendly saddle -Age-appropriate pedals