Compatible models: mop pad and Wicks for iRobot Roomba Combo j7+/ j9+ vacuum cleaner robot, please verify the mannequin quantity earlier than purchasing. Premium mop: substitute pad is made from selected microfibre materials with dense edge seams, solid Nylon Sticker fastener at the back, efficient water absorption and robust stain removing to remove cussed stains. Fits permanently wicks: Wick cap manufactured from microfibre and rubber, which permits the core hole of the water box to be closed stably and not using a drop of water leaking, and it is robust and durable. Washable and reusable: top off pack is water and machine washable and reusable for as much as 60 days depending on the cleaning environment and frequency of use. Colour:As Shown Material:plastic Package Contents: four x mop cloth 6 x water core Only the above equipment content, different merchandise are usually not included. Note: Light reflection and diverse displays may cause the colour of the object within the picture a little bit assorted from the genuine thing. The size allowed error is +/- 1-3cm.