Are you planning a river trip in Alaska? Northwest River Supplies offers some of the best dry bags in the industry and you'd do well to have a look. NRS has been making dry bags for many years, and they have it dialed in.
Hunters in need of a pack for packing out heavy loads of meat, hides and gear need a heavy-duty external-frame pack that's rugged enough to handle big loads, yet comfortable enough to "wear all day". Barney's Sport Chalet of Anchorage has long been an innovator in gear design and one of their signature products is their "Moose Pack".