The Apollo Zest 20" Junior Mountain Bike with front suspension for smoother rides. A durable kids bike ideal for off-road trails for kids 6-11 years. As part of the Apollo range, the Zest kids bike is built to suit every adventure on all types of terrains, with 6-speed gears, Shimano Revoshift shifters for easy gear changes and 20" wheels. The alloy brake levers ensure safety and firm stopping. Buy your kids bike online today at Halfords, the UK's largest cycling retailer.