Official Replacement Carbon Filter for Survivor Filter Model L600 Triple Filtration Water Filter Straw. Integrated mouthpiece with filter tip included To replace, simply remove used Carbon Filter Mouthpiece/Filter Tip and replace with the new one Can be re used up to 1,000 liters (264 gallons) and can be easily replaced. Made from food grade coconut shells, the Carbon Filter is designed to absorb heavy metals (such as cadmium, mercury and lead), contaminants and pollutants. The Carbon Filter also helps eliminate bad taste and odor from water. Mouthpiece attaches using a “push and twist” method to keep it secured onto the filter body Features an “O” ring where it connects to the filter body, which helps keep the device watertight. Beware of Imitations and se only Official Survivor Filter replacement filters to keep your Survivor Filter Triple Filtration Water Filter Straw in top condition.