1、Replacement water fountain filters compatible with Ceramic Drinking fountains, catches hair and debris,remove impurities and odor, keep the water tasting fresh.2、Ultra-fine holes filter firstly can filter impurities, hair and dust comprehensively, insured water clean. The coconut shell activated carbon secondly filters purify the water again, keep the water fresh and no smell.3、Pack of 4 activated carbon filters, 1Pcs Foam Filters. Size: Appox. 6 x 2 x 4.5 cm (L x W x H)4、Clean the fitler every 3-4 days and replace filter every 2-4 weeks to maintain water freshness,keep your famliy friends a happy life.5、Kindly note: clean filter with water before use. Foam filter can only clean by water. Detergent is not allowed. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.