Stay hydrated while on the go with these Niagara Purified Drinking Water Bottles. Purified water delivers a great taste. Reverse osmosis, micron filtration and ozone technologies help filter out impurities. Carefully filtered with reverse osmosis, micron filtration and ozone technologies, the water has been purified to ensure a great taste. Lightweight eco-air bottle design is easy to take with you. Each bottle contains 16.9 fl oz of water to help you stay hydrated.