The ultralight QuickDraw 1L Filter System delivers fast and easy filtration, and allows users to customize their systems with multi-vessel compatibility, to give adventurers the best user experience of any squeeze filter on the market. The 1L dirty reservoir is light and compact and built to withstand the rugged demands of a months-long thru-hike. Its wide-mouth opening and fill-handle keep your hands dry while you quickly and easily fill up so you can keep moving. On the filter, the dirty-side I/O (inner/outer) threads attach to the QuickDraw reservoir as well as common narrow-mouth bottles like smartwater and other Platy bottles. On the clean side, select between the DrinkCap for drinking and pouring and the ConnectCap that attaches to narrow-mouth bottles. The system is built to be safe, effortless and long-lasting. Two cleaning methods-shake-to-clean and backflushing-keep the filter flowing fast throughout your trip, while the Integrity Check process allows you to ensure it's still safely filtering water. With its incredible ease-of-use, packability, and fast-flowing performance, the QuickDraw 1L Filter System is the best squeeze filter for your backpacking trips.