2 Packs Replacement P30i Pillow Cushion(S) with Strap for Airfit P30i | Including 2 Pcs Cushion and 2 Pcs Head Strap, Washable and Reusable Without Replace Filter, Great-ValuePackage contains: Including 2 pcs cushion and 2 pcs Strap for P30i which are great value supplies by CPAP Studio can be used with the original frame. The cushion is recommended replace once a month. Improved design without filter: Noise reduction components use noise reduction mesh instead of a filter, which can be washed and used repeatedly without regular replacement, which relatively prolongs the service life. Single layer design for easy cleaning: