The new Zero Water travel bottle combines the category"s top-performing filter with a sleek and convenient design. The powerful 5-Stage Ion Exchange filter that has made our pitchers and dispensers so popular is now available in a stylish, hard-plastic portable bottle. Have pure, filtered, great tasting drinking water anywhere you go without wasting money on traditional bottled water and this is the only travel bottle certified to remove Lead, Chromium and Mercury. The Zero Water filter removes virtually all total dissolved solids (TDS) that can negatively affect the way water tastes. Even if you live in a municipality that cleans or treats water, water can pick up dissolved solids on its way from the treatment plant to your faucet, giving your tap water a metallic or chlorinated taste. The Zero Water Ion Exchange stage removes virtually all dissolved solids that may be left over from public water systems or that may have leached into your water from piping such as Aluminum, Lead, Zinc, Nitrate and more. The new Travel Bottle includes the next-generation filter color change technology that indicates the precise moment a filter is ready to be changed. Combo pack includes 2 Travel Bottles with filters and 4 additional filters.