I have 3 kids and I've ridden bikes with all of them. One thing they all have in common is they don't shift gears (at least not before it's too late).
Since Quinny isn't going to use 'em why have 'em?
We're both running a 20s in the back right now
So close to a "magic gear"! Yeah, yeah, yeah, push up mode is better, yadda, yadda, yadda...F/U! I ain't gots no push up spring.
When we first rolled down the road I had to actually work to catch up to him! SS suits the boy well.