Beyond simply attaching gear to the outside of the pack, external bungees and straps can serve as an additional compression system, securing the load closer to the supportive frame of the back and your body
Thats the fundamental tradeoff with maximum adjustability in a telescoping design: you get range, and you give up packability
I also had a major spinal fusion done on almost my entire spine and was looking for a bag that wouldn't "pull" on my spine during long hikes, and the way that this one is designed with its shoulder straps, it's like I'm carrying nothing at all on my back
Lets consider two real examples: A schoolboy traveling from Chennai to Ooty for a science camp needs a lightweight, structured bag that can hold winter wear, toiletries, and school items
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