This water bottle is eco-friendly and is the world's first fully portable,reusable,zero-waste,filtered water bottle. It ensures removal of chlorine, chloramines, and particulates getting the results of odor free and purified great tasting water . The plastic single use water bottles are made of material that is harmful and the chemical in plastic is not good and you can only use it one time. If you have a water bottle that is not plastic you can use it more and won't have to throw water bottles away.