Nalgene CXC Big Bore Tanker

Bought two and, like a fool, never tested them until the night before our departure. One failed where the quick connect joins the bag. Replaced it with an MSR bladder that never failed. Second bag sprung a leak at the top of the bag two days into the trip. Fortunately, was at the top of the bag, and was still able to use it. Will never buy Nalgene bladder again. Bottles yes, bladders NO. Returned them to REI.