We're currently having our kitchen and bathroom redone, so after swim class with DS we went to the PIL for a proper shower.
I asked MIL if I could run all the swimming stuff through her machine as it was a sunny day and I could get it out on the line and she was aghast.
She said that swim thing shouldn't be put through a machine as they lose elasticity.
Personally I'd just buy new stuff if that happened but our stuff has always been fine going in the machine and I really can't abide the thought of not properly washing them after the chlorine and skin cell soup.