This set of three Brita Classic filter cartridges is designed for use with compatible water filter jugs to improve the taste and quality of your drinking water. By reducing chlorine and limescale, these filters help prevent mineral buildup in your appliances and provide a fresher taste for your beverages. Each cartridge lasts for up to 4 weeks, and once they have reached the end of their lifespan, they are recyclable to help reduce waste.