Product Features REMOVES VIRUS, BACTERIA + PARASITES: the Ultrafilter Membrane protects against viruses (Rotavirus, Hepatitis A), Bacteria (including E.coli + Salmonella), Parasites (including Giardia and Cryptosporidium), Microplastics, sand, dirt, and cloudiness HIGH FLOW RATE: 30L/hr from gravity no pumping or external energy source required. LONG LASTING: The ultrafilter membrane has a lifetime capacity of 2,000 liters about five years of safe drinking water for a family of five INCLUDES: 8L gravity bag with carry strap and carabiner, 1.2m hose, Ultrafilter membrane, adapter to enable direct filling of water bottles with 28mm standard threading, prefilter basket, leakproof cap and backwash syringe LifeStraw is proud to be a B Corp and Climate Neutral Certified brand, For every purchase, a child in need receives safe drinking water for an entire year Product Specifications Hose Length: 1.2 m / 47.2 in Weight (total system): 750g / 26.4oz Height: 189.7cm / 74.7 in Volume: 8L / 2.1 gal 99.99% of viruses (Rotavirus, Hepatitis A) 99.999999% Bacteria (including E.coli + Salmonella) 99.999% Parasites (including Giardia and Cryptosporidium) 99.999% Microplastics, sand, dirt, and cloudiness Meets US EPA & NSF P231 drinking water standards for the removal of viruses, bacteria, and parasites BPA Free, FDA approved, premium materials Pore size: 0.02 micron