1.Purification Excellence Experience clean and delicious water with our ion exchange resin and granular activated carbon filter. This advanced filtration system effectively reduces chlorine, taste, odor, heavy metals, as verified by third-party laboratory testing, ensuring you enjoy fresh water. 2.Universal Compatibility Our filter is a versatile replacement option for a variety of Brita and other brand jugs, including Maxtra+, Marella, Marella XL, Marella Cool, Style, Style XL, Elemaris XL, Aluna, Aluna Cool, Mavea Elemaris System, Marella System, and AmazonBasics, Philips, Dafi, and Aquaphor jugs. 3.Advanced Composition Structure: Each filter in this 4-pack set consists of a multi-layer filtration system, including a pressure filtration layer, ion exchange resin layer, activated carbon layer, and a microfiltration membrane layer, providing comprehensive protection against contaminants. 4.Usage Instructions: For optimal performance, it is recommended to replace filters at least every 2 weeks, depending on usage and water quality. Please note that the frequency of replacement may vary as indicated on the product packaging. Pure water is fundamental to a balanced diet and a y lifestyle; therefore, always choose water filters that are microbiologically .