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.

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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.

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(UCSF Benioff Children's Hospital)

(UCSF Benioff Children’s Hospital)

“Made my day,” said Victor Guerra.

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