We had the same issue when we first bought Winterlude. We tried drying them out in the sunshine which seemed to have the best result, but nothing completely solved
the problem. A year later, we got a new mattress for the pullman berth.
If you're talking about the cushions
, we remove the covers and launder them in cold water
, then hang to dry and put the foam out in the sunshine while the covers are washing
and drying. Be sure to check one of your cushion covers first before you try this to make sure it holds up to laundering. Ours are supposed to be dry cleaned, but we found out when we were out cruising and there were no dry cleaners that laundering on a delicate cycle with cold water
and hanging to dry worked just fine. I wouldn't try this with faux suede or some of the other fancier fabrics though.