Kids will enjoy cruising around town with the Chipmunk Submarine Kids' Bike (18 inch , Navy Blue). Quick release of seat post makes it easy to adjust the height of the seat. Equipped with 2 hand brakes - a front caliper brake and rear brake gives the little rider more options to stop safely. Designed with patented Royal Baby crank bearing with a much higher transmission efficiency and lower rolling resistance. Easy to assemble - 95% of the bike is assembled except for training wheels, handlebar, saddle and pedals.