MSR HyperFlow Microfilter Cartridge Replacement haul bags This is the lightest

This is the lightest

away from the hot teapot

Well-padded

while wearing the helmet

Batteries : 4 AA (included)

MSR HyperFlow Microfilter Cartridge Replacement haul bags This is the lightestRestore flow rates in your HyperFlow Microfilter with fresh, new Hollow Fiber media. Filters up to 1000 liters. Results will vary depending on conditions. Specs Weight (Standard): . 8 oz Weight (Metric): 0. 02 kg Width (Standard): 1 in Width (Metric): 2. 54 cm Length (Standard): 4. 9 in Length (Metric): 12. 5 cm Filter media: Hollow fiber Cartridge life: ~1000 liters Country of Origin: Made in the U. S. A. of U. S. and Imported Materials Cartridge