Baby Jogger city sway Compact Folding Rocker Rock to soothe or bounce to play The Baby Jogger city sway rocker doubles as a bouncer to soothe and play at home or away. By engaging the kickstand you can easily transition from rocker to bouncer mode. city sway folds flat and can be securely stored or protected during transit with the included storage bag. The lightweight rocker weighs only 9 lb making it easy to move around the home or take on the go.