Which everyday backpacks have the largest capacity?

The Durston Kakwa 55 is an ultralight, internally framed roll-top backpack with a 55 L main capacity and 8 total pockets for quick access to essentials. It's made with Ultra 200X and includes load lifters and an aluminum frame to shift load to the hips. It suits serious multi-day ultralight hikers who want high capacity at under 2 lb and can manage occasional seam leakage with a liner.