Anti-Gravity? The Atmos and Aura backpacks both have the something called Anti-Gravity Suspension — a single piece of stretchy mesh fabric spans from the top of the back down into the hip belt. It looks odd at first, but it feels awesome and works great.
The mesh in the lower back and hip belt is firm yet stretchy, giving it a springy property that really hugs your waist. It never felt unstable when hiking, traveling, or even while jumping on the trampoline.
Important Specs:
Removable “floating” top lid with flap jacket cover underneath
Top loading with zippered access from the bottom
Shoulder harness adjusts to your torso size for better fit
Fit on the Fly Hip Belt extends hip belt easily
Compression straps
Trekking pole attachments
Two Ice tool loops
Front mesh pocket
Dual entry mesh side pockets
Hip belt pockets
Internal reservoir sleeve
Awesome: After multiple tests this pack stands out as the most comfortable I’ve worn. Everything from strap adjustment, to water bottle retrieval, to stowing trekking poles can all be done while hiking so I didn’t have to stop. The shoulder straps are plush and comfortable.