Atopple 1pc Home Kitchen Faucet Tap Water Clean Filter Double Purifier Head Hs and 5pcs Free Replacement Filter Material: PVA Diameter: 3cm Package Included: 1 x Water Clean Purifier Filter(included 1 PP Filter Cotton) ; 5 x Free PP Replacement Filter Cotton This product made of PVA polymer glue cotton, good filterability, harmless to human body. To a certain degree, it can filter suspension and miniature impurities that hardly seen by naked-eye.