I was looking for a lighter replacement for my Maximus jacket that could be more of a 4 season shell and not just winter. I took the gamble as the Optimizer is significantly thinner but I have layers for days. I recently took this slick jacket high up into Olympic National Park and it saw the worst of the worst while keeping the water out, fitting well, and breathing. The fatigue color was also on point, as this is going to be my jacket for hunting season. I was < 60 yards from a bull elk last weekend so the color works. I wish OR made more mid layers like the Cathode in camo or fatigue, it would be the rage of the hunting community.