The Nimbus Trace Access 70 is the pinnacle of our award winning Nimbus pack series. Big enough for longer, unsupported trips, yet lightweight, durable and functional. It features a zip open access panel and internal compression straps so you can get to that elusive piece of gear at the bottom of the pack without disturbing the gear above it. Our 3D TopoFlex frame is engineered to fit the topography of your back and mimic the way a back naturally flexes. The single “Pivot Point” attachment system on our shoulder straps and belts allows not only a more precise fit and enhanced freedom of movement; It supports and more equally redistributes your load along your hips, shoulders, and back! Now made with a maple-core, composite laminate which is both lighter and offers more longitudinal rigidity. Our Advection Back Panel compliments the ergonomic carriage benefits of the Topoflex gram and harness system by encouraging heat transfer and dissipation while simultaneously using the natural symmetry of the back.