ALL NEW Portable filtration--anywhere you go ZeroWater Travel Bottle Superior Portable Filtration - On The Go The new ZeroWater 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. Get pure-tasting, filtered water anywhere you go without wasting money on plastic bottled water. Remove virtually all total dissolved solids (TDS) that can cause a metallic or chlorinated taste with patented 5-Stage ZeroWater filters. Even residents in areas that clean and treat water effectively will be affected by dissolved solids which absorb into the water on the way to the faucet. Dissolved solids like pesticides, fertilizers, Lead, Fluoride and nitrates are removed more efficiently with ZeroWater filters than most popular gravity-fed or sports bottles. These undesirable impurities stick to the Dual-Ion Exchange as water passes through delivering pure-tasting water every time. Special Features: 28 Ounce Capacity Patented 5-stage dual-ion exchange filtration system Only travel bottle certified to remove lead, chromium and mercury Removes virtually all total dissolved solids for better tasting water FLIP – FILL – SEAL Lid Design – Allows you to fill the bottle without removing the lid and eliminates additional pieces Resin Color Filter change indicator on the filter FLIP FILL SEAL Zero Water"s unique "ColorChange" window ZeroWater portable filters utilize next-generation technology that indicates when to change your filter. During regular use, you will be able to see a color change through the built-in window. That will tell you when the filter needs to be replaced.