Now, what you describe as an adjustable hip belt is in fact a replaceable hip belt so that people can choose a larger or smaller circumference.

Compression Straps: Though they have slightly different placement, the suspension straps on the Rook and the Atmos are essential the same.So this all should not be understood as true objections although I list them below just that you know about them, perhaps some of them are essential to you.

This is accompanied by a two-level load lifters design. This is very useful when you move the harness far down or far up and it ensures that the harness remains comfortable in whichever position you place it. As for comfort, the Atmos is way more comfortable, even with nothing in it. The light padding in the straps and the softer mesh material just make it less groan-inducing when it comes time to load onto your shoulders.