If you’re going travelling for more than two weeks, this piece of gear is a must have. Not only will it save you hundreds of dollars from not buying bottles of water (and that’s always a good thing), it’ll also save hundreds of plastic bottles form being dumped into our oceans and landfills (also a good thing). For long distance hikes and travels to remote areas, the GravityWorks 2.0L Filter System is a trustworthy means of purifying ANY water that you might come across. I used this system for months on end in the Philippines, mainly to filter tap water, and it worked like a charm — quick, easy to use and very lightweight — with no pumping, ever.

PROS:

• Easy, Pump-free filtering
• Fast! 1.5-liters per minute
• Weighs as little as 7.2 oz. (203 g)
• Ultra-Compact
• Backflushes in four seconds in any configuration you choose, maintaining optimal performance with no additional parts.
• Proprietary Platy™ zip opening makes collecting water easy.
• Effective: Meets all EPA & NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera

CONS: