Pack weight: 13.5 oz. Filters 99.999% of bacteria (Giardia, eColi, Cryptosporidium, blocks sediment and large particulate. Lightweight pump and filtration system. User-replaceable filters. Includes: MUV1 activated carbon fiber filter, MUV2 hollow fiber filter, pre-filter pre-28 assembly, (5) pre-filter felt, out28 assembly, pump, (2) hose adapter, hose (blue/clean water, 18"), hose (gray/dirty water, 36"), strainer/pre-filter. Boxed with hanging tab.