Nanalum electrostatic filter technology. Perfect for traveling the world, filters chemicals, heavy metals, bacteria, and viruses, 99.999% of bacteria (Giardia, eColi, Cryptosporidium), 99.99% of viruses, blocks sediment and large particulate, improves water taste and clarifies water. Filter capacity: 90 gallons. Includes: MUV3 Nanalum filter, out+28 assembly, hose adapter, water bottle, and bottle tube (included in water bottle). Boxed with hanging tab.