Almost new MSR HyperFlow. '08 model with original cartridge filter and new redesigned filter cartridge.
Never field used. Just home testing. Original cartridge has only filtered household tap water. A few liters. Then placed in storage as outlined by MSR (flushed with water treated with a bleach). New cartridge from MSR direct. Never used.
Price: $79.89 includes USPS shipping, delivery confirmation and insurance.
PayPal. USA only