Contains all the minerals for a balanced daily intake of electrolytes and vital minerals including Calcium, Magnesium, Potassium and Silica. Calcium Carbonate (CaCO3) is used as an antacid to relieve the symptoms of indigestion and heartburn. It is the active ingredient in most antacid medication. Gush Valley has 159 mg/l of CaCO3. The presence of CaCO3 in water is commonly known as Alkalinity. Alkalinity is the total acid–neutralising capacity of the water. 4 litres of Gush gives you the equivalent of 1 antacid tablet. Can be part of your recommended daily Calcium and Magnesium requirements. Gush Valley is Naturally Alkaline with a pH of 7.7 - 8.2 The 800ml fits perfectly in any bicycle bottle cage and with an Extra 50ml more than the average bottle - you can go further. The Sport Cap makes it easy to drink while cycling, running, walking or just chilling. What's in the box 24x Gush Valley Still Water 800ml Sports Cap