The Osprey UNLTD AntiGravity 64 is a men's 64-litre trekking pack built for fully-loaded multi-day trips. Its AntiGravity suspension pairs tensioned mesh with aluminum stays, transferring load to the hips while letting air move between your back and the pack — useful on warm days or long climbs. Both the frame and hipbelt are fully adjustable, so the pack can be dialed in without buying a different size.
The main fabric blends 210D UHMWPE ripstop with a 500D recycled high-tenacity nylon, aimed at holding up against abrasive, rocky terrain without wearing through quickly. The main compartment opens from the top lid or a front panel J-zip, and storage includes two front pockets, two side pockets, and two ice axe loops for shoulder-season or winter trips. A built-in rain cover means one less item to pack separately.
At 2476 g in S/M, this sits in classic trekking-pack territory rather than ultralight — geared toward hikers who prioritize durability and load-carrying comfort over shaving grams.
Specifications
Color
Blue
Total Volume
64 l (16.91 gal)
Weight
2476 g (5.46 lb)
Dimensions ( Height x Width x Depth )
81 x 41 x 39 (2.7 x 1.3 x 1.3 ft)
Back System Type
Tensioned mesh
Frame Type
Aluminum stays
Chest Strap
✓
Load Lifter Straps
✓
Gender-Specific Fit
Men's specific
Main Fabric
210D UHMWPE Ripstop + 500D recycled HT nylon
Fabric Type
Recycled nylon
Main Compartment Access
Top lid, Front panel (J-zip)
Front Pocket Count
2
Side Pocket Count
2
Ice Axe Loops
2
Hydration Compatible
✓
Integrated Rain Cover
✓
Intended Use
Multi-day trekking
Warranty Period
99 years
Volume/Weight Ratio f(x)
25.8 l/kg
Weight per Liter f(x)
38.7 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
Expedition weight· mainstream zone 941–1980 g· ranked 182 of 196
2476 g
33 g 6050 g
Total volume
High capacity· mainstream zone 38–60 l· ranked 88 of 407