The built-in filter makes all the difference in this smart water bottle. The Grayl Ultrapress combines advanced filtration with a new slim water bottle. It uses electroabsorption and activated carbon to purify water which protects against heavy metals, chemicals, and viruses as well as common bacteria. The bottle has a 16.9-ounce volume and weighs just 12 ounces. It features a carry handle and leakproof screw-top closure. It takes just 30 seconds to purify one ½ liter of water.
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