I noticed the other day that a small black "cap" was missing from near the wheel of my City Mini Double.

It doesn't affect the functionality of the stroller at all, but having another little one on the way this stroller needs to be in top shape for a while longer.
I emailed Baby Jogger on Monday and they've already ordered me a new "wheel plug" and it should be here in a week!
Re: RAVE: Baby Jogger Customer Service!!
Danica 10.22.10 | Milo 12.23.12