You can wash City Strollers, but they do not recommend drying them in the dryer. Baby jogger says wash the seats and canopy in your washer on a gentle cycle then snap it back onto the frame to dry. I have done this a dozen times with my first City stroller and have never had any problems.
I bought the original City Micro when DD#1 was 2.5 years old and LOVED it. I can't wait to pick up my new City Mini Single in a few weeks when baby #2 makes its arrival.