Bellroy has a few photos on its website to show how you can organize your goods inside, but I find their samples to be a bit dreamy
In other words, the arbor is what the line is wrapped around
The need and drive for innovation results in products and service

Top-loading access with cinch closing system Internal reservoir sleeve Dual daisy chain loops Front panel zippered slash pocket Harness grab handle doubles as a luggage pass-thru Versatile: The Daylite Series accommodates a kaleidoscopic range of activities from day hikes on local trails to festivals, farmers markets and global travel Constructed with main body bluesign APPROVED fabrics, GRS-certified recycled polyester and PFC-free DWR, a sustainable build that's durable and can take years of everyday wear and tear Harness: Spacermesh harness with integrated grab handle, Adjustable sternum strap with whistle Hipbelt: Removable webbing hipbelt Backpanel: AirScape mesh-covered die-cut ridged foam provides comfort and ventilation Main: bluesign APPROVED 150D Recycled Polyester, PFC-free DWR Accent/Bottom: bluesign APPROVED 600D Recycled Polyester, PFC-free DWR Volume: 915in/15L Dimensions(HxWxD): 16.14x9.45x7.48in/41x24x19cm Weight: 0.752lbs/0.341kg Features Top-loading access with cinch closing system Internal reservoir sleeve Dual daisy chain loops Harness grab handle doubles as a luggage pass-thru Versatile: The Daylite Series accommodates a kaleidoscopic range of activities from day hikes on local trails to festivals, farmers markets and global travel Constructed with main body bluesign APPROVED fabrics, GRS-certified recycled polyester and PFC-free DWR, a sustainable build that's durable and can take years of everyday wear and tear Harness: Spacermesh harness with integrated grab handle, Adjustable sternum strap with whistle Hipbelt: Removable webbing hipbelt Backpanel: AirScape mesh-covered die-cut ridged foam provides comfort and ventilation Materials Main: bluesign APPROVED 150D Recycled Polyester, PFC-free DWR Accent/Bottom: bluesign APPROVED 600D Recycled Polyester, PFC-free DWR Specifications Volume: 915in/15L Dimensions(HxWxD): 16.14x9.45x7.48in/41x24x19cm Weight: 0.752lbs/0.341kg

Uniformity: The carding machine assures that the fibers are processed evenly, which leads to the outcome being consistent
Our tester had issues with fit, and found the pack hitting the back of her head no matter how she positioned it