Astar Rectangle Microfiber Pad for Shark Pocket Steam Mop S3550 S3501 S3601 S3901 (3) Best Quality from Astar,strong ability for dirt-resistant.Thick,shark original replacement head pads.Try once,you will know this is the best listing than any one else... Dimensions: Approx 7 X 13, Steam activated micro fibers loosen and lift dirt and grim Perfect for all hard-floors These pad have Velcro on the inside to ensure a tight and snug fit Reusable and machine washable steam pads