【High efficiency filtration】 The water filter contains activated carbon particles, which can effectively reduce limescale deposits and soften the water. The filtered water is beneficial to human health. The content of chlorine, heavy metals and other harmful contaminants will be greatly reduced. 【Compatible models】 Water filter compatible with all BRITA water bottles, including those with "PerfectFit" function (Aluna, Marella, Style), for Mava Maxtra 10014951001122105731106832. 【Instructions for use】In principle, filters should be replaced at least every 2 weeks. Do not use water filters that are microbiologically unsafe or of unknown quality. Refreshing water Great value Precise fit Friendly service Specifications. Water Filter Compatible with all BRITA water bottles, including those with the "PerfectFit" function (Aluna, Marella, Style) Replacement Cartridge , Replacement Cartridge For Mava Maxtra 10014951001122105731106832. 1. Keeps water fresh: significantly reduces chlorine, odors and other impurities. Retains healthful minerals. The water you drink will be better quality. 2. Perfect fit for all BRITA water bottles work the same way as the original filter, saving some money and keeping the water pure