Grayl UltraPress Purifier Bottle Forest Blue, 16.9oz

The award-winning UltraPress Purifier Bottle simplifies the filtration process, giving us pure, soul-quenching H2O in mere seconds. We just fill the outer bottle, give the cap a half turn (to vent air without risking contamination), and press the inner bottle back inside. Seriously, that's it. The ultra-powered activated carbon does all the hard work, letting us sit back and reap the reward.