Phil & Teds ?? about parts

I was just wondering if anyone had change the set. I mean brought a whole new canvas seat. I ask because mine is covered in mold and I don't want to put a newborn into it. The lady at the store said she could just order a whole new seat and it works out much cheaper than replacing the buggy but just wondered if it was very difficult to put the new seat on.
Hope that all makes sense.

You can unscrew it. Mine got Mould on it around early Autumn and I blasted it with the hose, scrubbed it etc and it's fine - you can't even tell! Let it dry in the sun. I did unscrew it in parts and undo it but didn't take it off completely.