A detachable silicone bumper is included, to help protect the glass carafe from bumps and scratches. In the lid, there's a dial you can set, reminding you to change the filter granules every four weeks. A collaboration with BWT, one of the world's leading water technology companies. The Pure filter granules included reduce chlorine, heavy metals and limescale - giving you cleaner and better tasting water. 100% dishwasher safe. The unique stainlesssteel filter system can be cleaned in the dishwasher without scratching. This prevents microbiological growth, making it more hygienic. The Purifier's glass carafe has an elegant design worthy of any dinner table. The Aarke Purifier is a patented water filter pitcher in glass and stainless steel - no plastic carafe, no plastic cartridges. Instead, you pour the Aarke filter granules into the unique, refillable steel cartridge.