The Katadyn Hiker Pro Filter is the same Hiker you know and love, but in a higher performance version. The Pro features a removable filter protector that extends cartridge life in challenging conditions. Quick connect fittings make installation and removal of input and output hoses easy! The Katadyn Hiker Pro Filter also allows direct attachment to 1/4" drink tube of hydration packs. Which makes filling your hydration pack quick and easy! Katadyn describes the Hiker filter as the best for all around use while Backpacker magazine calls it the unrivaled best for field use. Whatever your need maybe from backpacking to a hurricane prepardness kit, the Katadyn Hiker pro filter is your reliable source for clean drinking water.