Osprey Atmos AG LT 65 vs Osprey Exos Pro 55
Quick take: The Osprey Atmos AG LT 65 costs $10 less; the Osprey Atmos AG LT 65 carries more (65 vs 55 liters); the Osprey Exos Pro 55 is lighter (2.08 vs 4.2 lbs).
| Spec | Osprey Atmos AG LT 65 | Osprey Exos Pro 55 |
|---|---|---|
| Price | $320 | $330 |
| Rating | — | — |
| Type | Traditional Pack | Ultralight Pack |
| Frame Type | Internal Frame | Internal Frame |
| Capacity | 65 L | 55 L |
| Weight | 4.2 lbs | 2.08 lbs |
| Max Load | 40 lbs | 30 lbs |
| Torso Fit | S/M 17-20 in, L/XL 21-23 in, 1 in increments | S/M and L/XL |
| Material | 210D recycled honeycomb nylon with 500D high-tenacity base | NanoFly 100D nylon x 200D UHMWPE ripstop |
| Back Panel | AirSpeed suspended mesh over LightWire perimeter frame | AirSpeed suspended mesh over 3.5 mm LightWire frame |
| Adjustable torso | Yes | Yes |
| Ventilated back | Yes | Yes |
| Raincover included | No | No |
| Hipbelt pockets | Yes | Yes |
| Removable lid | No | Yes |
| Hydration sleeve | Yes | Yes |
| Fits BV500 bear can | No | No |
| Warranty | Osprey All Mighty Guarantee (lifetime) | Osprey All Mighty Guarantee (lifetime) |
Pros & cons
Osprey Atmos AG LT 65
- ✓The AirSpeed suspended mesh remains the benchmark for back ventilation in a full-size trekking pack, and the LT keeps it intact.
- ✓4.2 lb measured is around half a pound under the standard Atmos AG 65 for the same volume and suspension.
- ✓$320 undercuts the standard Atmos AG 65 by $50 while giving up little in carrying comfort.
- ✓Five fixed torso stops in one-inch increments are more repeatable than the sliding webbing harness on the standard Atmos.
- ✓A 500D high-tenacity base is a sensible reinforcement on a pack whose main body is a light 210D honeycomb.
- ✓Rated to 40 lb, which is high for a pack of this weight and covers most multi-day loads.
- ✓Hipbelt pockets are large enough for a phone and snacks without unclipping.
- ✓Covered by Osprey's All Mighty Guarantee, which is effectively lifetime and among the most generous in the industry.
- ✗OutdoorGearLab measured the main compartment at 52 L against the advertised 65 L, so it packs smaller than the badge implies.
- ✗The shoulder strap padding is not adjustable, unlike the hipbelt's Fit-on-the-Fly system.
- ✗Five fixed torso stops are less granular than the standard Atmos AG's continuously sliding harness.
- ✗The suspended mesh forces the load away from the back, which is less stable than a contact panel when scrambling.
- ✗No dedicated sleeping bag compartment, which the cheaper Rook 65 does have.
- ✗210D honeycomb is noticeably lighter-duty than the 420HD nylon on the Aether.
- ✗US pricing was only confirmable through gear media, as Osprey's own site blocks automated access.
- ✗Bear-canister fit is not stated for this model, unlike the Aura AG 65 which Osprey confirms as vertical-compatible.
Osprey Exos Pro 55
- ✓33.2 oz for a framed 55 L pack with suspended mesh is competitive with cottage ultralight packs that offer neither.
- ✓The lid removes to save 2.8 oz, so the pack can be stripped for shorter trips.
- ✓NanoFly's UHMWPE grid gives far better tear resistance than the denier alone suggests.
- ✓A 0.60 oz per litre ratio is excellent for a pack with a real frame and ventilation.
- ✓Side pockets swallow five 700 ml bottles, which is unusually generous.
- ✓Half-litre hipbelt pockets are usable rather than token.
- ✓Nearly a pound lighter than the standard Exos 58 for only 3 L less volume.
- ✓Osprey's All Mighty Guarantee, which almost no cottage ultralight brand matches.
- ✗30 lb is the manufacturer ceiling and the frame is noticeably at its limit there.
- ✗The frame and hipbelt are both non-removable, so the pack cannot be stripped further.
- ✗$330 is more than the standard Exos 58 and than several cottage packs.
- ✗Measured main compartment is 46 L against 55 L advertised.
- ✗Only one volume is offered, unlike the three-size Exos and Eja runs.
- ✗NanoFly is light enough that careless handling on rock will still damage it.
- ✗No rain cover included.
- ✗Bear-canister fit is not stated for this model.