Osprey Atmos AG 65 vs Gregory Baltoro 65
Quick take: The Osprey Atmos AG 65 is lighter (4.61 vs 4.87 lbs).
| Spec | Osprey Atmos AG 65 | Gregory Baltoro 65 |
|---|---|---|
| Price | $370 | $370 |
| Rating | 4.8★ (1,900) | 4.7★ (900) |
| Type | Traditional Pack | Traditional Pack |
| Frame Type | Internal Frame | Internal Frame |
| Capacity | 65 L | 65 L |
| Weight | 4.61 lbs | 4.87 lbs |
| Max Load | 50 lbs | 60 lbs |
| Torso Fit | Adjustable 17-23 in | Adjustable 16-21 in |
| Material | 210D nylon | 210D/420D nylon |
| Back Panel | AntiGravity suspended mesh | FreeFloat A3 auto-rotating suspension |
| Adjustable torso | Yes | Yes |
| Ventilated back | Yes | No |
| Raincover included | Yes | Yes |
| Hipbelt pockets | Yes | Yes |
| Removable lid | Yes | Yes |
| Hydration sleeve | Yes | Yes |
| Fits BV500 bear can | Yes | Yes |
| Warranty | Osprey All Mighty Guarantee (lifetime) | Gregory lifetime warranty |
Pros & cons
Osprey Atmos AG 65
- ✓The AntiGravity suspended mesh is the most-praised suspension on Reddit — owners consistently say a 40 lb load feels dramatically lighter and rides on the hips rather than the shoulders.
- ✓Back ventilation is genuinely class-leading; sweaty-back complaints that plague other 65L haulers largely disappear with the full-length trampoline mesh.
- ✓The adjustable torso and Fit-on-the-Fly hipbelt let one pack fit a huge range of bodies, which is why REI staff so often point first-time buyers at it.
- ✓The current generation finally includes a raincover in the box, closing a long-standing gripe against the price tag.
- ✓Owners report the harness stays comfortable deep into 12-mile days in a way cheaper framed packs don't, especially with loads over 35 lbs.
- ✓Storage layout is excellent — dual-zip hipbelt pockets, a huge front stretch pocket, and side access to the main compartment.
- ✓Osprey's All Mighty Guarantee repairs or replaces the pack for life, and Reddit is full of stories of decade-old Ospreys fixed for free.
- ✓Resale demand is strong; used Atmos packs hold value better than almost any mainstream backpacking pack.
- ✗At 4.6 lbs it is more than double the weight of an ultralight framed pack, and r/Ultralight regulars consider it the definition of overbuilt.
- ✗The rigid AntiGravity frame makes the pack carry 'big' — it does not compress well for lighter weekend loads.
- ✗The curved mesh back panel eats into usable volume, so its 65 liters packs smaller than a Baltoro's 65.
- ✗The tensioned mesh makes it awkward to fit wide items like a horizontal bear canister low in the pack.
- ✗Price has crept to $370, and several Reddit threads note the Rook 65 delivers most of the function for a bit more than half the cost.
- ✗The hipbelt padding, though improved, still bottoms out for some users when loads push past 50 lbs.
- ✗The suspended mesh can twang and creak when scrambling or moving fast on uneven terrain.
- ✗Water bottle pockets are angled for reach but shallow, and taller bottles eject when you bend forward.
Gregory Baltoro 65
- ✓The pivoting FreeFloat hipbelt is the single most praised feature — owners say it moves with your stride so the pack never fights your hips on uneven terrain.
- ✓It is the perennial answer to 'most comfortable pack over 45 lbs' threads, often beating the Atmos for pure load hauling.
- ✓The plush lumbar pad and thick hipbelt padding are noticeably richer than anything Osprey ships.
- ✓Pocket organization is best-in-class: huge stretch front pocket, dual zip hipbelt pockets that fit big phones, and a dedicated sleeping bag compartment.
- ✓The included raincover and side-zip main access come standard.
- ✓The QuickStow sunglasses stash on the shoulder strap is a small touch owners rave about constantly.
- ✓420D reinforced fabric at wear points has a strong durability record over multi-year use.
- ✓The removable lid means you can shave weight or run it low-profile without buying anything extra.
- ✗At nearly 4.9 lbs it is the heaviest pack in its peer group, and even fans admit most loads don't need it.
- ✗The foam back panel runs hot compared to the trampoline-mesh Atmos — sweat is the most-cited tradeoff in versus threads.
- ✗The suspension's bulk makes the pack feel enormous on smaller frames even when correctly sized.
- ✗$370 pricing sits at the very top of mainstream packs, uncomfortably close to lighter cottage options.
- ✗The feature-heavy build (nine-plus pockets, straps everywhere) adds ounces many owners strip or ignore.
- ✗The FreeFloat pivot squeaks for some users after dusty trail miles until cleaned.
- ✗It carries badly under 30 lbs — the frame is simply too much structure for light loads.
- ✗Warranty service, while solid, is slower than Osprey's by most Reddit accounts.