The UltraPress Covert Edition is compact, discreet and incredibly easy to use. It fits in any rucksack pocket (or cup holder), requires no preparation and filters 500ml of clean drinking water in just 10 seconds (3 litres/min). Discreet on-the-go filtration for hikers, backpackers, hunters or adventurers looking for safe and clean water for drinking, filling hydration systems or cooking. The filter supplied lasts for 300 uses (150 litres), after which it must be replaced.