Designed for small groups, the Katadyn Vario is a powerful and efficient companion in a lightweight package. Its Dual Piston Technology allows the Vario water filter to quickly treat up to 2 liters of water per minute, with minimal effort. You can choose between a higher output of 2 liters per minute or a lifespan-extending 1-liter per minute output. With its trio of filters, the Vario scrubs water to confidently remove harmful contaminants. Simply activate the ceramic pre-filter to conquer dirtier water, so the durable glass fiber pleated filter inside lasts even longer. The active charcoal also gets rid of odors, ensuring that you can enjoy fresh and tasty refreshment that you can trust.