Aqua Optima Water Universal Filter Cartridge, 30 Days (6 Months Supply), Compatible with Brita Classic,5 Stage Filtration System Reduces Chlorine, BPA Free, White Features COMPATABILITY: Aqua Optima Universal water filter cartridges are compatible with Brita Classic, Boots Original and most round style water filters. They are not compatible with oval-shaped water filters- Like Brita Maxtra, Maxtra+, Basics and Aqua Optima Evolve and Evolve+ filters. GREAT TASTING, PURER WATER: Our patented 5-step water filtration technology efficiently filters tap water to reduce impurities including microplastics, chlorine, limescale, herbicides, pesticides, lead and heavy metals. ACTIVE INGREDIENTS Aqua Optima filters feature activated carbon that absorbs chlorine, and filters out organic impurities. A special ion exchange reduces heavy metals and prevents limescale build up. Filters remove particles such as sediment, rust and other tiny contaminant particles. BENEFITS: The many benefits of filtered