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 tap water include better tasting hot and cold drinks and improved look and taste of cooked vegetables. Filtered water also reduces limescale build up and extends the life of your kitchen appliances REDUCE PLASTIC & SAVE MONEY: Aqua Optima water filter cartridges are recommended for 30 day use or 170 litres of filtered water. Replacing your bottled water with filtered water will considerably reduce the amount of plastic bottles used. At just 4p per litre, filtered water is up to 95% er than buying bottled water, Weight: 2.2928075248 pounds, Manufacturer: Strix Ltd