The HAPUP Cat Water Fountain is a square water fountain that is perfect for keeping your cat hydrated and happy. With a large capacity of 2.2 liters, this water fountain is able to provide plenty of water for your cat. The water flow is adjustable so you can customize the water flow to your cat’s needs. This water fountain also features blue pre-filter sponges that help reduce impurities in the water. The white PP cotton can catch hair and debris in the water pump, while the ion exchange resin layer softens the water. The activated carbon layer removes bad taste and odor from the water.