I received two filtered bobble water bottles. Both of these water bottles have water filters inside the caps. As the water passes over the positively charged carbon surface, the negative ions of the contaminants are drawn to the surface of the carbon granules. Both bottles also have a soft cap to go over the lid. These bottles are also reusable, until its time to change the filter. If you drink a lot of water you should get this water bottle it does really help the water taste a lot better. These are really worth the money, i think.
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