From a deep glacially-formed aquifer comes the goodness of pure, 100% natural spring water with one of the highest, naturally occurring calcium levels of any still water bottled in the USA. Each 16.9oz. bottle of Calcium20 delivers 60mg of calcium, and each 10oz. bottle delivers 35mg of calcium, in a highly absorbable state. It hydrates and refreshes your body, while naturally increasing your calcium intake.