This 16-in kids bike carries riders 41.3 in to 51.2 in tall through the ages 4 to 7 stretch when a child moves from wobbling to steady pedaling. The low-step carbon steel frame lets a rider swing on and off without clearing a high top tube, and the saddle climbs from 22 in to 25 in as legs get longer. Two independent brakes, a front hand lever and a rear coaster, give a beginner more than one way to stop. Air-filled 16-in tires soften sidewalk seams, the enclosed chain guard shields fingers, and the bike lands 85 percent assembled so a parent finishes it in minutes.