The filter pack includes 2 sets of yellow sponge filters, each in its red filter casing. This is the same one as the original filter that comes with the 'Vincent' cordless vacuum cleaner. It is washable and re-useable, however if it is not completely dried out, the vacuum suction will be reduced (due to the filter being blocked by water). Also for higher standards of air purification and reducing allergies, it is recommended to replace the filter every three months.