Compact and ready to go anywhere! Ridiculously easy to use — the 16.9oz UltraPress® Purifier Bottle fits into any pack pocket (or cup holder), requires zero setup, and makes clean, great tasting drinking water in a mere 10 seconds (3L/min). On-the-go filtration and purification for the hiker, backpacker, global traveller, camper, or emergency prepper seeking fast-flow purified drinking water. Simply — Fill. Press. Drink.®