I have a complete set of dinette cushion covers in very good condition from my 2002 Itasca Sunrise 35U. They've been cleaned and have no visible tears or obvious stains. They have seatbelt slots even though my 35U didn't use them so they will possibly fit other models. The color/pattern is N47 Sand Castle which seems to be a 2002 Suncruiser item (see link for info):
The Winnebago part numbers are:
Backs - P11897-05-N47 13.5" x 42" x 5"
Seats - P05603-15-N47 23" x 42" x 5"
These are free, you pay shipping (approximately 6 lbs).