LifeStraw Emergency Water Filter
This microfiltration membrane removes 99.999999% of waterborne bacteria and will provide 4,000 litres (1,000 gallons) of clean and safe drinking water with proper use and maintenance. Choose from various colors and styles, but the price varies on color and style selection. Price drops from $24.95 to $15.96. Shipping is free for prime members or on orders over $25.