Steam pocket mop pads w/ scrubber material Scrubber material for tough stuck on messes The Dirt Grip Washable pad aids in providing a superior mop as it loose and and lifts locked in dirt. Use for Shark Steam Mop Model: S3501, S3550, S3601, S3901 Size: 12.5" x 7.5"(Standard Size) Improve inner mesh lining allow for steam to flow outward easily 2 sides cleaning face Steam activated microfiber loosen and lift dirt grime Multi Material: Durable (70% polyester , 30% polyamid) Velcro fastener with elastic opening to ensure perfect fit and tight Reusable and machine washable