“evolution in progress” and every generation just gets better. It started out years ago with some guides from Alaska that were smart enough to realize the benefits of carrying internal frames instead of those heinous and heavy externals. The issue was how could they carry out more than they came in with, without having to leave gear behind. Well here’s your answer. 25" x 14" x 8" 4lbs. 15oz. 2875 Cubic Inches. Max 1 camo.