Platypus GravityWorks 4.0L Filter System Color:One Color designed with a transverse taper

designed with a transverse taper that permits sideways placements in flares and shallow seams

or even on a backpacking trip

The oversized-ring design is easy to pick up and may even inspire a game of tug

the perfect length to get out for regular cardio and calorie burns without completely emptying the tank

Platypus GravityWorks 4.0L Filter System Color:One Color designed with a transverse taperThe reviews keep coming and one thing is clear, the GravityWorks system is changing how people filter water. Delivering four liters of filtered water is just 2. 5 minutes with no pumping, there's simply no easier or faster way to get safe water away from home. Ideal for bigger groups, the system's eight liter capacity eliminates both the worry and hassle of keeping plenty of water around for anything you need.