Enjoy Clean & Tasty: Enjoy of cleaner, fresher-tasting drinking water on-the-go with the Philips GoZero Everyday water filter bottle that instantly improves the taste of water by reducing chlorine and particulates (taste and odor). The activated carbon fiber filter instantly transforms tap water into cleaner, tastier & healthy drinking water. How to Corectly Install the Filter: The small round opening of the filter should be facing upwards. If you are experiencing difficulty in sucking water out of the straw, it may be due to an incorrect installation of the filter. Please refer to the icon on the filter cover for the correct orientation. Health-First Bpa Free: The filter reduces chlorine (taste and odor) and more with every sip Made of BPA-free Tritan plastic, this straw bottle is designed to work with the Philips GoZero Everyday Filter. This activated carbon fiber filter transforms tap water into cleaner, tastier drinking water. The silicone mouthpiece lets you easily sip water without compromising the flow of water. (*Activated carbon water filters generally DO NOT reduce minerals or TDS) Designed With Your Convenience in Mind: This leak-proof filter water bottle comes with a built-in carry loop, a cup-holder friendly size, and a top-rack. The pop-up lid can be easily opened with one hand. Dishwasher Safe Design (except the filter). Good for Environment: Save the environment by replacing 450 single-use plastic bottles with just one Philips GoZero Everyday filter. Using the reusable water bottle lowers your carbon footprint and helps contribute to a healthier planet by reducing your use of disposable bottles.