GRN line biological protection. Kit includes: Replaceable GRN line series II filter; lightweight, collapsible water containers; tubing; bulb pump; hose clamp; and drawstring pouch. Removes bacteria, viruses, and protozoan cysts such as Cryptosporidium and Giardia. Improves water taste, odor, and clarity. Reduces chlorine and chemicals. Accepts any WaterBasics Series II replacement filter. Filters up to 80 gallons. Gravity does the work. Compact kit includes everything you need to collect, filter, store, and dispense life-saving water.