Osprey Aura AG 50 Backpack vs Gossamer Gear Mariposa 60 Backpack

Editorial Team
Last modified at May 17, 2026
When it comes to choosing the right backpack for your outdoor adventures, the Osprey Aura AG 50 and the Gossamer Gear Mariposa 60 are two top contenders. Both backpacks are designed to provide comfort, durability, and organization for long treks, but they have distinct features that cater to different needs. The Osprey Aura AG 50 is known for its Anti-Gravity suspension system and excellent ventilation, while the Gossamer Gear Mariposa 60 stands out for its durability and stability. In this comparison, we'll delve into the specifics of each category to help you make an informed decision.

Why You Can Trust Us

  • Side-by-side analysis based on real user feedback
  • Unbiased comparisons, not influenced by partnerships
  • Updated as new data becomes available

We may earn from affiliate links at no extra cost to you.

Osprey Aura AG 50 BackpackGossamer Gear Mariposa 60 Backpack
Osprey Aura AG 50 Backpack
Mariposa 60 Backpack
Capacity

2,868-3,051 cu in

3,661 cu in

Weight

4.16 lb WXS/S; 4.29 lb WM/L

34.2 oz medium/M belt

Material

210D/500D recycled nylon

Recycled Robic nylon

Frame Type

AntiGravity suspension

Aluminum, closed-shape frame (PVT Frame+Belt)

Volume

2,868-3,051 cu in

3,661 cu in

Warranty

All Mighty Guarantee

1-year defect warranty

Hip Belt Size

N/A

26–61.5 in

Number Of Pockets

7 exterior pockets + main

7 exterior pockets

Load Lifters

Yes

Yes

Compression Straps

Dual upper/lower side compression straps

No

Sternum Strap

Yes

Yes

Hydration Sleeve

Yes, internal with center back exit port

No

Rain Cover

Yes, included

N/A

Comfort

Osprey Aura AG 50 Backpack

4.8/ 5.0

Mariposa 60 Backpack

4.7/ 5.0

Comfort is crucial for backpacking backpacks, as it directly impacts your experience on long treks. A comfortable backpack ensures that weight is evenly distributed, reducing strain on your back and shoulders. The Osprey Aura AG 50 excels with its Anti-Gravity suspension system, which provides excellent weight distribution and breathability, making it feel lighter even with heavy loads. The Gossamer Gear Mariposa 60 also offers a comfortable fit with its padded hip belt and load lifters, which transfer weight effectively to your hips. Both backpacks have adjustable features, but the Osprey Aura AG 50's mesh back panel and anti-gravity technology give it a slight edge in overall comfort. However, the difference is minimal, and both backpacks are designed to keep you comfortable on the trail.

Durability

Osprey Aura AG 50 Backpack

4.4/ 5.0

Mariposa 60 Backpack

4.6/ 5.0

Durability is essential for backpacks that will endure rough terrain and frequent use. A durable backpack can withstand wear and tear, ensuring it lasts through many adventures. The Gossamer Gear Mariposa 60 shines in this category with its robust materials, including thickened nylon and an aluminum frame, which provide excellent resistance to abrasions and snags. The Osprey Aura AG 50 also offers high-quality materials and construction, with reinforced seams and durable zippers, but it falls slightly short compared to the Mariposa 60's more substantial build. For those who prioritize longevity and ruggedness, the Gossamer Gear Mariposa 60 is the better choice.

Stability

Osprey Aura AG 50 Backpack

4.3/ 5.0

Mariposa 60 Backpack

4.7/ 5.0

Stability is key for maintaining balance and control while hiking, especially on uneven terrain. A stable backpack keeps the load balanced and secure, reducing pack waggle and improving overall comfort. The Gossamer Gear Mariposa 60 excels in stability with its load lifters and removable internal frame, which help transfer weight to the frame and reduce pack movement. The Osprey Aura AG 50 also provides good stability with its light wire frame and hip belt overlay, but it doesn't quite match the Mariposa 60's performance in this area. If stability is a top priority, the Gossamer Gear Mariposa 60 is the clear winner.

Ventilation

Osprey Aura AG 50 Backpack

4.7/ 5.0

Mariposa 60 Backpack

3.2/ 5.0

Ventilation is important for keeping you cool and dry, especially on long hikes in warm conditions. Good ventilation helps prevent excessive sweating and discomfort. The Osprey Aura AG 50 stands out with its mesh back panel and anti-gravity technology, which offer outstanding airflow and breathability. The Gossamer Gear Mariposa 60, while it has some ventilation features, falls short in this category with less effective airflow and a tendency to feel warmer on hot days. For those who prioritize staying cool and dry, the Osprey Aura AG 50 is the better choice.

Adjustability

Osprey Aura AG 50 Backpack

4.7/ 5.0

Mariposa 60 Backpack

3.9/ 5.0

Adjustability is crucial for achieving a perfect fit, which enhances comfort and weight distribution. A highly adjustable backpack can be customized to fit different body types and preferences. The Osprey Aura AG 50 excels in adjustability with a range of sizes and on-the-fly adjustments, making it easy to customize for a perfect fit. The Gossamer Gear Mariposa 60 also offers adjustable features, but it doesn't quite match the Aura AG 50's level of customization. If adjustability is a top priority, the Osprey Aura AG 50 is the clear winner.

Organization

Osprey Aura AG 50 Backpack

4.9/ 5.0

Mariposa 60 Backpack

4.6/ 5.0

Organization is key for keeping your gear accessible and well-arranged, making your hiking experience more enjoyable. A well-organized backpack allows you to easily access your essentials and keep your load balanced. The Osprey Aura AG 50 offers a thoughtful design with multiple pockets and compartments, including a detachable lid and hip belt pockets, making it easy to organize and access gear. The Gossamer Gear Mariposa 60 also provides good organization with plenty of pockets and compartments, but it doesn't quite match the Aura AG 50's level of organization. For those who prioritize organization, the Osprey Aura AG 50 is the better choice.

Trust & Transparency

  • Data-driven rankings from real user reviews
  • Affiliate partnerships don't influence our methodology

We may earn commission from links.

Conclusion & Final Verdict:

After comparing the Osprey Aura AG 50 and the Gossamer Gear Mariposa 60, it's clear that both backpacks have their strengths. The Osprey Aura AG 50 excels in comfort, ventilation, adjustability, and organization, making it a great choice for those who prioritize these features. On the other hand, the Gossamer Gear Mariposa 60 stands out in durability and stability, and offers a larger capacity and lighter weight.

Final Verdict: If you need a backpack with excellent comfort and ventilation for long treks, go with the Osprey Aura AG 50. If you prefer a more durable and stable backpack with a larger capacity and lighter weight, choose the Gossamer Gear Mariposa 60.

See All Comparisons

Related Comparisons