380mls/13 oz 316L grade stainless steel Alkaline water neutralizes the body’s acidic levels which aids the maintenance of a healthy pH level. Key Benefits of Drinking Ionized Alkaline Water Makes alkaline water with a pH level of 9-9.5. Alkaline water is an anti-oxidant. Eliminates free radicals and toxins from the body. Alkaline water boosts metabolism. Alkaline water breaks down water molecule clusters for more effective and efficient hydration. Alkaline water emulsifies fat. Aids in breaking down fat in the body. Great for weight loss and clogged arteries. Rich in negative ions. Drinking alkaline water gives you better results and additional health benefits than drinking regular water. See detailed description under Benefits of Drinking Alkaline Water in the Water Enrichment section. The filter inside the bottle that creates the alkaline water is a scientific mixture of 13 natural elements and mineral including: tourmaline Maifanshi-stone, far infrared stone, nano silver powder, Calcium ion, p Stone. Bottle comes with a starter cartridge that will last approximately 6 months based on three litres/99 oz per day. Not recommended for children under 10 years of age.