This cover
is manufactured with a 3-layer non-woven polypropylene construction that
features a rugged spun bond outer layer attached to a moister barrier middle
layer and joined with a softer fleece inner layer to provide a water-resistant
fabric that protects your classic VW against the elements.
Because
there will always be condensation, it is advisable to take the cover off once
in a while and let it air when using it for a long time.