Mesa with Simple Flip Filter Straw LidIncluded: One carbon filter, a filter casing that attaches to the filter and one non filtered straw Filter Duration: One carbon filter lasts 40 gallons approximately 2 months Double Wall Insulation: Keeps beverages at ideal temperature for hours Leakproof Lid: The Simple Flip Straw Lid offers a tight seal to prevent leaks. It is compatible with the filtered PP straw and the non filtered PE straw used in other Simple Modern products. Not recommended