Grayl UltraPress Purifier Bottle
Grayl UltraPress Purifier Bottle, 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.