High quality from Reti. Our filters are made of high-quality activated carbon and ion exchange resin and cotton fabric, which are a high level of quality. PRODUCT DETAILS - Pack of 8 It is compatible with Mudeela / Veken / ISYOUNG / PARNER / Happy PAPA / DELOMO / BARVEST / LOETAD cat flower fountain and others of the same size. Ion exchange resin softens tap water. Activates carbon removes odours and keeps water fresh in taste. Cotton fabric keeps hair, debris and dirt thoroughly. Tips: 1. Rinse the cat fountain with water before use and rinse thoroughly from running water before use. 2. The square cat fountain filters should be replaced every 1-2 weeks in summer and every 2-4 weeks in winter. Depending on the frequency of use. Color: white Material: activated carbon Package includes: 8 x Square Filters Only the above package content, other products are not included. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.