Aqua Leisure FF-6905 is a fitness exercise bike designed for children ages 4 and up. It features a sturdy main frame with adjustable seat and handlebars, so it can grow with your child. The bike also includes a removable deluxe stopwatch to track progress and a tension knob for customizing the workout intensity. With its compact size and durable construction, the Aqua Leisure FF-6905 is a great way to get kids active and help them develop healthy exercise habits.