The Mazama Dualocity Dual Chamber Hydration Res 3Ltr is a quick and easy to use, no-fuss system. It stores both electrolytes and water in its chambers, giving you instant access through the 2 shoulder strap mounted bite valves. The back-to-back chambers can hold 1.5Ltr and are each connected with a drink tube set.
It is easy to fill due to its top fill port that opens wide, which is also convenient for cleaning. The quick connect exit ports make it easy to remove the bladder to refill without removing the drink-tubes from the pack.