Perfect for a small group, the Katadyn Vario is a powerful companion in a small, lightweight package. With it, you can quickly treat up to 2 liters of water per minute with less effort than you dreamed possible thanks to its Dual Piston Technology. Choose between higher 2-liter/minute output or lifespan-extending 1-liter/minute output. A trio of filters scrubs water to confidently purge the bad stuff. Activate a ceramic pre-filter with a quick turn to conquer dirtier water so the durable glass fiber pleated filter inside lasts even longer.