The Vario Dual is the first portable water filter that is adjustable for different water conditions. It uses three filtration systems: it has a high output glass-fiber filter for most water conditions, a ceramic prefilter to protect the primary filter in cloudy water plus active carbon to reduce bad tastes and odours. It produces up to 2 litres of water a minute and each of the three filtration systems is easily replaceable to extend the usability. Lightweight and durable for camping and hiking, the Vario Dual is the number one when weight matters. This Vario is compatible with most standard outdoor bottles and hydration bladders.