🎒
Ultralight Pack
$330

Osprey

Osprey Exos Pro 55

The Exos Pro is Osprey's answer to the cottage ultralight brands: 33.2 oz for 55 L, or 30.4 oz with the lid removed. It uses NanoFly, a 100D nylon crossed with 200D UHMWPE, over a 3.5 mm LightWire frame, and saves nearly a full pound against the standard Exos 58 at the cost of load rating and a fixed hipbelt.

Price
$330
Capacity
55 L
Weight
2.08 lbs
Best For
Thru-hikers with sub-30 lb loads who still want a suspended-mesh frame

Specifications

Type
Ultralight Pack
Frame Type
Internal Frame
Capacity
55 L
Weight
2.08 lbs
Max Recommended Load
30 lbs
Torso Fit
S/M and L/XL
Material
NanoFly 100D nylon x 200D UHMWPE ripstop
Back Panel
AirSpeed suspended mesh over 3.5 mm LightWire frame
Warranty
Osprey All Mighty Guarantee (lifetime)
Raincover Included
No
Fits BV500 Bear Canister
No

Features

Adjustable TorsoVentilated BackHydration SleeveHipbelt PocketsRemovable Lid

Pros

  • 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.

Cons

  • 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.

Related backpacks

More from Osprey
Osprey Exos 58
$285
Ultralight Pack

The Exos 58 is Osprey's crossover ultralight — a sub-3-pound pack that keeps a real suspended-mesh frame and lifetime warranty. It has been an Appalachian Trail staple for a decade, and the current generation added an adjustable torso. The women's version is the Eja 58.

58 L2.84 lbsSuspended Mesh BackVentilated back

Weight

2.84 lbs

Capacity

58 L

Frame

Internal Frame

Also in 38 L / 48 L

Best for: Hikers stepping down from traditional packs without going full cottage
View details
🎒
$285
Ultralight Pack

The Eja is the women's-fit Exos and Osprey's lightweight trekking pack: 2.7 lb for 58 L, with the same AirSpeed suspended mesh as the Atmos in a stripped-down chassis. It is the pack that bridges mainstream and ultralight, offering a frame and ventilation at a weight that cottage packs compete with.

58 L2.7 lbsWomen's FitVentilated back

Weight

2.7 lbs

Capacity

58 L

Frame

Internal Frame

Also in 38 L / 48 L

Best for: Women thru-hiking or covering long distances with sub-35 lb loads
View details
Osprey Aether 65
$340
Traditional Pack

The Aether 65 is Osprey's heavy-hauling workhorse, built around a burlier frame and tougher 420-denier fabric than the Atmos. It trades the AntiGravity trampoline for a body-hugging AirScape back panel that handles 50+ lb loads with more control. The women's equivalent is the Ariel 65.

65 L60 lb Load Rating420D Fabric

Weight

4.85 lbs

Capacity

65 L

Frame

Internal Frame

Also in 55 L

Best for: Load haulers, trip leaders, and anyone regularly carrying 45-60 lbs
View details