... price 4. suitable for 3-7 years 12" children bike pass CE Tires and Tube: good quality, tasteless, black ... easily, so as to adapt to each child.7. Pass CE. Frame looks simple, natural and unique.8. ... Bag and helmet is combined with bike, use the same design, make the bike looks very coordination wholly. Helmet ... 1. Rim Size: from 12" 16" 20"2. Bike Frame: steel and painting, thicker argon-arc welding/CO2 ...