The Pure Drinking Water Straw is a sure way of safeguarding the water you drink anywhere you go. It has up to a 25 gallon filter life, removes 99.99% of contaminants found in drinking water including chemicals, Chlorine, bad taste, odor and heavy metals. The advanced filter removes virus and bacteria to a 99.99%. The Pure Drinking Water Straw is environmentally safe, ideal for everyday use and it comes with an attractive water-proof carrying case. It is a convenient replacement for bottled water and the cost savings will add up quickly. The Pure Drinking Water Straw is like a miniature bottled water plant in your pocket, school lunch box, brief case, while traveling, eating out, or for emergency preparedness.