When it comes to extended backcountry adventures, having a reliable, high-capacity backpack is crucial. The Osprey Aether Plus 100L aims to be the ultimate companion for serious backpackers and long-distance trekkers. We’ve put this behemoth through rigorous testing to see if it lives up to Osprey’s reputation for quality and functionality in the realm of serious outdoor gear.
Quick Stats
- Capacity: 100L
- Weight: 6.45 lbs (2.93 kg)
- Primary Material: 210D High Tenacity Nylon
- Dimensions: 35.43″ x 17.32″ x 14.96″ (90 x 44 x 38 cm)
- Notable Features: CustomFit-in-Motion™ hip belt, AirScape™ backpanel, convertible top lid daypack
The Good
- Massive 100L capacity
- Highly adjustable fit system
- Excellent load distribution and comfort
- Convertible top lid doubles as a daypack
- Durable materials and construction
The Bad
- Heavy when empty
- May be overkill for shorter trips or lighter packers
- Premium price point
- Can be complex to adjust initially
Who It’s For
The Osprey Aether Plus 100L is designed for serious backpackers, thru-hikers, and expedition leaders who need to carry substantial loads over long distances. It’s ideal for extended backcountry trips, international trekking adventures, or any scenario where you need to pack for multiple weeks in the wilderness.
The Full Review
External Components
The Aether Plus 100L makes a statement with its sheer size, but Osprey has managed to keep the design relatively sleek considering the pack’s capacity. The 210D high tenacity nylon exterior strikes a good balance between durability and weight, capable of withstanding the rigors of serious backcountry use.
The star of the show is Osprey’s CustomFit-in-Motion™ hip belt and harness system. This highly adjustable setup allows for a precise fit, which is crucial when you’re carrying loads that can easily exceed 50 pounds. The hip belt can be heat molded for a custom fit, though we found it comfortable even without this extra step.
The AirScape™ backpanel features a mesh-covered, ridged foam design that provides both cushioning and ventilation. While you’ll still experience some sweat buildup on hot days (inevitable with a pack of this size), the system does an admirable job of promoting airflow.
Multiple compression straps allow you to cinch down your load, while the reinforced handle on the front of the pack makes it easier to hoist the Aether Plus when fully loaded. Dual ice axe loops and trekking pole attachments add versatility for alpine adventures.
Internal Organization
The Aether Plus 100L offers a cavernous main compartment with both top and front panel access. This dual-entry system is a godsend when you need to retrieve items packed in the middle or bottom of your bag without unpacking everything.
Inside, you’ll find a hydration sleeve that can accommodate up to a 3L reservoir. The sleeve is positioned to help balance the weight of the water close to your back.
The pack features a sleeping bag compartment at the bottom with a removable divider. This allows you to either keep your sleeping bag separate or utilize the full length of the pack as one compartment.
Multiple internal pockets, including a large mesh pocket on the underside of the lid, help keep smaller items organized. External pockets include two large side pockets perfect for water bottles or tent poles, and a large front shove-it pocket ideal for quick-access items or wet gear.
One of the standout features is the convertible top lid, which can be removed and used as a lightweight daypack. This is incredibly useful for summit attempts or short excursions from your base camp.
Durability and Quality
As expected from Osprey, the Aether Plus 100L is built to withstand serious abuse. The 210D high tenacity nylon body, reinforced with 500D nylon packcloth on high-wear areas, shows excellent resistance to tears and abrasion. After several extended trips, our test pack showed minimal signs of wear, primarily some light scuffing on the bottom panel.
YKK zippers are used throughout, providing smooth, reliable operation even in dusty or muddy conditions. The buckles and straps are equally robust, inspiring confidence that they won’t fail when you’re miles from civilization.
Comfort and Carry
For a pack of this size, the Aether Plus 100L carries remarkably well. The CustomFit-in-Motion™ system allows for a level of adjustability that ensures the pack moves with your body, even under heavy loads. The padded hip belt does an excellent job of transferring weight to your hips, while the load lifters help keep the pack close to your center of gravity.
The AirScape™ backpanel, while not completely eliminating sweat, does a commendable job of promoting airflow. On extended hikes in warm weather, we found the ventilation to be better than many competitors in this capacity range.
It’s worth noting that at 6.45 lbs when empty, this is not a lightweight pack. However, given its carrying capacity and feature set, the weight is justified. When properly fitted, the Aether Plus distributes loads impressively, making 50+ pound carries manageable over long distances.
Versatility
While primarily designed for extended backpacking trips, the Aether Plus 100L’s features make it adaptable to a variety of scenarios. The removable top lid daypack adds versatility for shorter excursions, while the multiple attachment points allow you to lash on additional gear for specialized trips.
The pack is also compatible with Osprey’s Daylite daypack, which can be attached to the front of the Aether Plus for additional storage or used separately.
Value and Conclusion
The Osprey Aether Plus 100L comes with a premium price tag, reflecting its high-end materials, construction, and feature set. For serious backpackers and expedition leaders, the investment can be justified by the pack’s durability, carrying comfort, and versatility.
However, it’s important to consider whether you truly need a 100L capacity. For many backpackers, even on extended trips, a 65L or 70L pack might be sufficient and would come with weight savings. The Aether Plus is best suited for those who regularly embark on long expeditions or need to carry specialized gear.
In conclusion, the Osprey Aether Plus 100L is a top-tier backpacking pack that excels in comfort, durability, and features. Its massive capacity and excellent load-carrying abilities make it an ideal choice for serious backcountry enthusiasts who need to haul substantial loads over long distances. While it may be more pack than some users need, those who can take advantage of its capabilities will find it to be a reliable and comfortable companion on their most ambitious adventures.