HydraPak 42mm Filtration Cap w/ Bite Valve

Meet UltraFlask+, the easiest way to filter water on any hike, run or ride.  The Filter Cap fits on any universal 42mm flask or soft bottle.  HydraPak designed this filter cap to allow users the chance to fill up on any stream or lake and keep the adventure going all day long.  Hollow microfiber filter removes 99.999% bacteria and protozoa including E.coli, giardia and crypto cysts (also removes 99.999% of microplastics bigger than 3 microns) Filter Cap is compatible with all 42mm opening HydraPak products including running flasks, Seeker and Flux bottles. Comes with an awesome bite valve so you can drink directly from a flask or drain into a bigger bottle  Great flow rate that squeezes out more than a liter per minute Filter cap designed to produce 1500 liters of fresh water at a rate greater than 1L/minute Easy to clean, only need to gently shake filter back and forth in clear water and it's ready to go To maintain a great flow rate occasionally backwash with the included plastic cap that attaches to standard faucets 100% BPA and PVC free Ultralightweight Filtration: 36g for Cap