$averPak Single - Includes 1 $averPak Seychelle 28oz Flip Top Water Bottle with the ALKALINE pH2O Enhancing Filter Includes 1 - $averPak Seychelle 28oz Flip Top Water Bottle with the ALKALINE pH2O Enhancing Filter. Bottle can be used with all other Seychelle 28oz filters too. The 28oz Flip Top Water Bottle with the ALKALINE pH Enhance Filter is the most effective, efficient and economical portable pH Enhancing water filtration system available! Enhances Water up to a pH of 9.5. This advanced technology has been developed through the research of aerospace scientists, medical researchers, and water purification specialists.. Filter also removes up to 99.99% of aesthetics such as chlorine, sediment, dirt silt and sand; chemicals (VOCs) such as DDT, MTBE, Benzene, Chloroforms, Trihalomethanes (THM&apos;s); heavy metals such as Arsenic, Lead, Mercury, Copper, Zinc, Aluminum and Chromium 6; and Radon 222 This pH enhanced filtration provides the following benefits; Helps the body maintain a healthy pH level, Essential minerals, Flushes toxins from cells, Hydrates the body more efficiently and Aides in digestion.