Advanced Filtration Medium (650 ml) Water Bottle with Level 2 Filter, Arctic

Filter is perfect for removing any water impurities. I even use it now for bottled waters to remove the chlorine and sodiumOnly reason I could not give this 5 stars is that within 2 weeks of everyday use, the little loop ring carabiner that comes with the bottle snapped while attached to my backpack and the bottle fell to the ground. Seems to be a common fault with these so best just removing it at the start and replacing with a more sturdy attachment device.