An ultralight and versatile water filtration system for small backpacking groups, the QuickDraw 3L gravity filter system is perfect for hikers on fast and light missions ConnectCap threads the clean side of the filter directly on to any 28mm water bottle, including smartwater, select Cnoc bags, soda bottles, and more Hose and bottle adapter connects to both wide- and narrow-mouth Nalgene, HydroFlask, Cnoc Bags, and most Yeti water bottles Included CPC connector connects to many hydration bladders, including the Platypus Big Zip Evo, most Hydrapak reservoirs, and many OEM reservoirs. I/O threads, the ConnectCap, quick connector-fitted hose, and the Bottle Adapter let you dial in your custom leak-free system using the clean and dirty vessels you prefer, like smartwater bottles, Platy bottles, and quick disconnect-fitted hydration reservoirs. Super fast 3 liters per minute flow rate when squeezed and 1.75 liters per minute when used in a gravity water filter setup Hollow fiber filter is individually tested and meets the stringent NSF & EPA P231 protocol, ensuring the removal of 99.9999% of bacteria and 99.9% of protozoa Ultralight at just 8.2 oz (233 g), filter measures 5 x 1.8 in (13 x 5 cm) and whole system packs down to a compact 9.5 x 3.9 x 3.2 in (24 x 10 x 8 cm). Made in the USA