SAN FRANCISCO (CBS SF) – Some children fighting the good fight at the University of California San Francisco’s Benioff Children’s Hospital got some backup Wednesday morning.

A group of caped crusaders appeared outside hospital rooms in hot pursuit of grime.

The team of window washers dressed as Superman, Iron Man and Robin.

“Too bad my 3 week old was finally released yesterday and not today! This is fantastic though. Honestly the best hospital hands down,” CBS SF reader Kelsey Rodriguez posted to Facebook.

(UCSF Benioff Children's Hospital)

(UCSF Benioff Children’s Hospital)

“Made my day,” said Victor Guerra.

The event was part of a national trend designed to brighten the treatment experience for young patients.