I have the old insulated Cabelas bibs and parka, purchased years before Fortress clothing was available. It's well insulated, but Fortress is a new standard in insulation. I have the base layer, gloves, balaclava and insert for pack boots. I can wear lighter outer ware, so total weight is reduced. I wish I could justify 2 sets of cold weather gear. I am sure the Fortress gear would be lighter, and warmer.