Four seat positions rather than the usual two or three, which matters because pedal reach is the thing that decides whether a 3 to 5 year old can actually turn the cranks. A 13-in inseam sits right at the middle setting, and the range covers riders 30.5 in to 47 in tall. Steering is capped at 135 degrees so the front wheel cannot be swung round far enough to fold the trike under itself. The metal frame weighs 6.5 lbs yet is rated to 55 lbs Pedals detach, the rear wheels glow as they turn, and a bin sits behind the seat. ASTM and CPSIA tested.