Good video from HPG about their new pack.
I particularly agree with the importance of lumbar padding, which is equally valid, if different in application, with a frameless pack (i.e. one without stays of any kind). The idea of attaching the back-side compression straps to a wave of fabric sewn into the seam will be integrated into whatever pack I make next, as it neatly solves an otherwise inexorable design weakness. I also think there’s a lot to be said for the zippered top and stuff sack lashing model.