The Platypus QuickDraw Microfilter System draws upon decades of expertise in filtration and hydration to provide adventurers the best user experience of any fill-and-squeeze water filter on the market. The easy-to-use system comes in two parts: the durable and taste-free 1L QuickDraw reservoir and the hollow fiber filter cartridge. Weighing just 3.6 ounces (101 g) and filtering up to 3L per minute, the QuickDraw system ensures quick and easy access to clean water on any adventure. You can either shake-to-clean the hollow fiber filter or perform a tool-free backflush to ensure the fast flow rates will stick around for the duration of your trips. With its inside/outside (I/O) dual-thread design, the QuickDraw filter cartridge securely adapts to smartwater¨ bottles and other Platy bottles and reservoirs allowing you to develop your ideal system to confidently explore the wilderness.