Purchased 2 of these for a trip out to Capital Reef to do several hikes. I really like the way this backpack was built. Lots of storage space/compartments. Also a nice large water bottle holder if 3 Liters isn't enough (used it for a large gatorade). This pack DOES have the quiklink connection system, so you can buy the insulated tube or other quiklink ready items. The support on the back felt nice. The water stayed cool throughout the hikes. I really like the easy access mesh pockets attached to the waste buckle. Can't stress the amount of pockets on this thing enough, loved the storage. Also, the materials on this backpack add no weight, very light material. Great for day adventures.