Fangrui Product Details Advanced Compatibility: These Filters Are Ideal For Plastic Water Bottles (26oz Or 36oz) And Stainless Steel Water Bottles (20oz Or 32oz). Note: These Are Not Suitable For Bottles Without Straws Or The Soft Squeeze Sport Water Bottle Models. Enhanced Filtration Technology: Featuring A Top-grade Coconut Shell Carbon Block, These Filters Adeptly Minimize Contaminants Including Chlorine, Odors, Sand, And Sediment, Ensuring Your Water Is Clean And Fresh-tasting Every Time. Optimized Water Taste: Employing A High-density Filtration Media And An Innovative Design, This Filter Offers An Expanded Filtration Area, Resulting In Improved Water Quality And Taste -- Enjoy Pure, Refreshing Water With Every Sip. Eco-friendly Cost-efficient: Your Filter Every 2 Months Or After 40 Gallons Of Water To Maintain Optimal Performance. Not Only Does Each Filter To Approximately 450 Single-use Plastic Bottles, But It Also Promotes Environmental Sustainability And Reduces Your Expenses. Simple Installation Process: Quic