The Osprey Aether Plus 85 is the largest pack in the Aether Plus line, sized for multi-day and week-long trips — Osprey's own trip-length attribute puts it around 3 to 5 nights. At 85 liters and 2830 g, with a volume-to-weight ratio of 30 l/kg, it belongs to the classic, full-support category rather than ultralight territory.
The padded contact back panel sits on an aluminum stay frame with an adjustable torso, so the fit can be tuned rather than requiring a different size. The main compartment opens from the top, through a front J-zip panel, and from the bottom, which helps when a sleeping bag is packed separately at the base. The removable lid doubles as a standalone daypack, useful for basecamp trips or day excursions from a hut. Two front and two side pockets, plus hip belt pockets, round out the storage, and dual ice axe loops extend use into mountaineering terrain.
Fabric is bluesign-approved 210D high-tenacity nylon with a PFC-free DWR finish. The pack is hydration-compatible and includes an integrated rain cover. It suits demanding multi-day treks and expeditions where load capacity and durability matter more than shaving weight.
Specifications
Color
Black, Green
Total Volume
85 l (22.45 gal)
Weight
2830 g (6.24 lb)
Dimensions ( Height x Width x Depth )
86 x 41 x 40 (2.8 x 1.3 x 1.3 ft)
Back System Type
Contact (padded)
Frame Type
Aluminum stays
Adjustable Back Length
✓
Chest Strap
✓
Load Lifter Straps
✓
Gender-Specific Fit
Men's specific
Main Fabric
210D High Tenacity Nylon bluesign approved, PFC-free DWR
Fabric Denier
210 D
Fabric Type
Nylon
Main Compartment Access
Top lid, Front panel (J-zip), Bottom access
Sleeping Bag Compartment
✓
Lid Pocket
✓
Removable Lid
✓
Front Pocket Count
2
Side Pocket Count
2
Hip Belt Pockets
✓
Ice Axe Loops
2
Compression Straps
Side only
Hydration Compatible
✓
Integrated Rain Cover
✓
Intended Use
Multi-day trekking, Mountaineering
Recommended Trip Length
Multi-day (3-5 nights)
bluesign Certified
✓
PFC/PFAS Free
✓
Volume/Weight Ratio f(x)
30 l/kg
Weight per Liter f(x)
33.3 g/l
Pack Style
Classic hiking pack
Hip Belt Type
Padded with pockets
Where to buy
No offers available for this product yet.
Category context Hiking Backpacks (407 products)
Weight
Heavier end· ranked 19 of 22
2830 g
33 g 6050 g
Total volume
Expedition size· mainstream zone 38–60 l· ranked 14 of 407