Replacement EZ-Clean Membrane that works with all BeFree Systems by Katadyn. Please note that this does not come with a drinking cap or carbon filters. 

Replacement Carbon filters are HERE. 

BeFree - Activated Carbon bottle and flip cap are HERE. 

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Specs

Thread size: 42mm

Pore Size: 0.1 micron

Removes: sediments, cysts, protozoa, bacteria

Flow Rate: up to 2L/min

Filter Life: tested to 1,000 liters; individual results will depend on water quality

Materials: Hollow fiber

Made in South Korea