Sunbrella Cover Poufs have an inner pouch that contains the styrofoam ball, making cleaning a very easy process.
Hand wash:
Brush off dirt using a soft brush and spraying with a mild pH liquid soap cleaner. Allow the cleaning solution to soak into the fabric. Rinse thoroughly until all soap residue is removed. Air dry of course.
Washing machine:
First close the zip and wash at a low temperature without spinning (maximum wash temperature 30° C), in the sensitive program.
To fight mold add 1 cup of bleach.
Allow the fabric to air dry naturally.
For more information, visit the official Sunbrella page and read more about how to clean stains:
How to clean guide