Bought these for my son when he started walking at 10 moths and he's still wearing them at16 mths. They have held up really well and loves them.  Runs to go get them when it's time to leave. The soft motion has been really good for his walking (and now running). I put a different pair of shoes a friend gave us and they were heavier with a more rigid sole. My son didn't like walking in them and actually brought his Kellens to me.