The frog team sky 55 kids bike 2016 provides an incredibly stable and easy going riding style with a light weight yet highly durable aluminium frame construction the frog kids bike takes aspects from hybrid style rides to perform both on and off the roads the 8 speed gear system comes with easy change thumb shifters to help your child get to grips with how their gear choice effects the ride quality and performance it also includes a shorter crank length of 114mm suitable