Has anyone every washed sun lounger cushions?

[achoocashew]

I bought some second hand sun loungers with cushions , the long fat padded ones and the cushions smell quite musty. Can I wash them in the washing machine, does anyone know please?
Or will they clump and be ruined?

I throw them in on a delicates

And they come out ok?

Yeps! Just don't tumble dry them!