This is a very nice pack. Sits comfortably on your vest back. The lining of the pouch keeps water surprisingly cool. I like the two additional pockets for extra storage. You can conceivably fit two bladders in the main pouch to double your water supply. Minimum of sloshing is heard when running and moving. The drinking tube is quite long and the bite block functions nicely. The fill port is quite big and allows for easy and quick filling, however it can be a bit of a pain to thread the top and get a good seal. Though with practice and patience it seals very well.
Keeps water cool
Two extra storage pouches
Long drinking tube
Easy to fill
Tough to get a good seal on the cover
Zippers are a bit stiff at first.
Rating: [4 of 5 Stars!]