I had a nice sequence of bikes for my kids.
1. They started with Striders.
2. After they outgrew the Strider, I got them a Strider style bicycle with pedals ( and a crank )
3. After they outgrew the small wheel pedal bike, I got them a Micro-Mini BMX bike ( about 15 lbs )
4. Then I got them a folding mini for RV trips. Around the neighborhood they use Race MTB's that I imported.
Thanks,
Yan