Platypus QuickDraw Microfilter

Outdoorplay says:
With its simple, rugged design and versatile use modes, the ultralight Playtpus QuickDraw Microfilter makes dependable water filtration easier than ever. The dual-thread design attaches to different kinds of bottles for travel adventure and can be cleaned easily. On the go filter provides clean, filtered water quickly for ready drinking Hollow fiber technology delivers ultrafast flow rates with normal squeeze pressure Packs small for easy access anywhere on or in your packing system Inside/Outside dual thread design attaches to a variety of reservoirs and bottles Soft-touch filter housing allows a firm grip even after getting wet Attached clean side cap flips open and creates a secure seal when closed Shake-to-clean & tool-free backflush methods facilitate a convenient and fast clean Individually tested to ensure it meets all EPA and NSF guidelines for bacteria & protozoa removal