Crazy Water No. 3 alkaline natural still mineral water is naturally infused with electrolytes and minerals for a slightly basic ph of 7.5. you get 33 mg. of magnesium, 75 mg. of calcium and 2 mg. of potassium per liter along with a mixture of other trace minerals, and you get hydration without any calories or sugars. This 33.8 fl oz bottle provides about four 8 fl oz servings, so there's enough refreshment to share.