I have the jiberish arctic camo vest and a 12/13 saga vest and the quality on saga just kicks the shit out of jiberish in every way. The saga vest is made from the same materials as their fatigue jacket so its far more waterproof than the jiberish. You can also get the saga vest in far bigger sizes. my jiberish vest is 3x and still a couple inches smaller than my xl saga. So yeah if you are looking for warmth then look to saga not jiberish.
"Seriously, the first slashes and faceshots you get riding pow skis for the first time ever on a deep day is probably what I would imagine sex being like."-Theron.