MSR® AutoFlowTM Gravity Filter delivers pure, pump-free water!
Let nature do all the hard work! Simply fill it, hang it, and forget it. Harness the power of gravity and let the AutoFlowTM clean up to 1 1/2 liters per minute.
BIG 4-liter reservoir allows you to fill large quantities at once, making it the perfect choice for group outings. Quick and easy maintenance, too, for longer expeditions.Clean, pure, safe: