Hellow Roni,
To wash the actual pillow you would need to remove the inner stuffing and memory foam support and take the polyester filling out of the product. You can then wash the inner cover and put pillow inner fill back into the product. If you wash all together the foam will stay wet which will be an issue. Please let us know if we can be of further assistance in any way.
Warm regards, Brett Parnham
03 8585 6685