Osprey designed the new Aether Backpacks with a brand-new fitting system—Osprey’s best—and the Aether 55 Backpack is perfectly sized for weekenders and overnighters. The back torso adjusts vertically to customize the fit for all sizes, and On-the-Fly shoulder strap and waist belt adjustments ensure quick-and-easy micro-adjustments that you can cinch on the trail. Osprey not only integrated a rain cover, but also treated the main fabric in DWR in case you don’t get the cover on in time. A LightWire frame offers surprisingly stiff rigidity when you’re carrying heavy loads, and Airscape mesh provides breathable ventilation on your back.
- Solid-fitting backpack built for weekenders and overnighters
- 55L is the smallest, standard Aether Backpack from Osprey
- On-the-Fly shoulder and hip adjustments ensure a custom fit
- LightWire frame with breathable Airscape back provides stability
- DWR coating and included rain cover offer weather protection
- Compression straps ensure a secure load
- Zippered front panel gives you another way to access the main compartment
- Pocketing and straps offer storage for sleeping bags, pads, ice axes, trekking poles, water bottles, and more
- Item #OSPZ18S









































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