Update your reservoir game with the CamelBak Crux Reservoir Filtration Kit 2L. The slim and lightweight 2L Crux Reservoir and included LifeStraw Hollow Fiber Filter will remove bacteria, parasites, and microplastics, while the Activated Carbon Filter reduces lead, chlorine, and other unwanted chemicals, keeping your hydration safe when you need it most. Designed to fit CamelBak packs designed to handle 2L reservoirs.