What do you use to wash the material that covers the bunk pads?

I just acquired a fold-out section for the upper bunk and would like to
clean it up a bit. I thought I'd use oxy-clean.  Anything I should be aware
of?  (Dry clean only?!)

Bradley Flubacher
State College, PA
'81 diesel rabbit
'82 diesel westy
'82 diesel van
'84 GL wasserboxer