The Cirkul White Cherry flavored water filter cartridge is a 20ml (0.68 fl oz) pack perfect for those looking to add a fruity twist to their water. With zero calories per serving and a serving size of 0.05 fl oz, this American-inspired product is a convenient and healthy choice for anyone wanting to enhance their water with a refreshing cherry flavor. Made in the United States by the brand Cirkul, this flavored water filter is easy to use and provides a delicious way to enjoy your beverages.