The 18-in size is the only one in this bike family that ships with a kickstand, so it parks upright on the driveway instead of being laid on its side or propped against the garage wall. Riders 47.2 in to 59.1 in tall with a 24 in to 25.5 in inseam meet a saddle spanning 23.5 in to 26.5 in, and the seat is rated to 130 lbs for the ages 4 to 8 range. Larger wheels roll over sidewalk joints and loose gravel that stop smaller ones. Training wheels detach, the chain stays covered, and a bell and reflectors are fitted.