Product information for Aqua Select Navulzakjes: Application of Aqua Select Navulzakjes: Refill granule bags for the Aqua Select refillable classic filter cartridge (sold separately). Aqua Select® water filter jugs provide you with deliciously pure, clean water every time. With this effective refillable filter system, you don't have to throw away a plastic cartridge. Simply open, empty, and refill the cartridge with fresh granules from a refill pouch when they need replacing. Used granules are not harmful to the environment and can be disposed of with regular household waste. This products belongs to the category: Water Filter