Discover ceramic filters and filter bottle cartridges for our portable water filter systems. Filter bottle cartridges can only be used with our filtered water bottles. Gravity water filters are designed for long life and effective filtration of contaminants including sediment, bacteria, chlorine, heavy metals, microplastics and more, from virtually any source. Retains health-giving minerals that are naturally present in your water. Reliable, fresh, clean to taste and easy to use for all the family. Use anywhere.