Sawyer Gravity SP160

Filter large quantities of water with no pumping. The Sawyer 1-Gallon Gravity System (SP160) pairs a gravity bag with Sawyer's dual-threaded MINI filter — rated to 0.1 micron absolute, removing 99.99999% of bacteria, 99.9999% of protozoa, and 100% of microplastics. Fill the bag, hang it, and let gravity do the work.

• 1-gallon gravity bag plus dual-threaded MINI filter
• 0.1 micron absolute filtration
• No pumping — ideal for group camp and backcountry
• MINI filter weighs just 2 oz