Exciting new adventures await! The Segway-Ninebot 14" kids bike has heavy-duty training wheels that make learning to ride a bike for kids safe and easy. The Segway-Ninebot 14" kids bike has soft-silicone coverage on the bike stem, top tube, head tube, hub, and sprocket cassette which prevents exposure from sharp edges offering extra safety for kids. It is designed with an optimized gear ratio with balanced resistance for kids' to exercise and encourage muscle development.