The complete redesign of the exterior panel of the Flex PR has loads of improvements:
1. Width of the panel: The front panel is roughly 3 ½” wider, which translates into better load stabilization, which in turn allowed the front mesh pocket to be bigger, but more about that in the next paragraph. The wider exterior panel means the straps that go across the top to clip to the back panel are also wider. Imagine carrying a bear canister into a remote wilderness river in Montana, the wider those top straps are apart, the better that canister stays securely strapped down. We found it fits a boating helmet better too. Finally, the bottom portion of the bag (which holds all of your gear in place) is also wider - again, providing more surface area to contain the various items you may be carrying.
2. Front pocket improvements:The new double pocket is a game changer! I previously struggled to find a secure place to store my four-piece whitewater paddle, but the pleated pocket behind the existing mesh zipper pocket has changed all that. Place for paddle, check! And because the pocket is now pleated, the front mesh pocket can be used even when the other pocket is maxed out. On a recent trip I had both pockets full, and was able to easily get in and out of the zipper portion. The front pocket is 3” taller, and features the same bungee cord configuration as on the original Flex, a bungie that helps you attach even more odds and ends (did we mention packrafting isn’t exactly ultralight?) as desired.