Osprey Aether Backpack - 55L - Black

The Osprey Aether 55 delivers reliability and readiness for your adventures. It features Custom Fi...

Best current price£179.46from Amazon

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AmazonOsprey Aether Men's Backpack, 65L, Black, S/M
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£179.46
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eBayOsprey backpack Aether 55 L / XL Black
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Lepape EMEAOsprey Noir Aether 55 Man Black
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£219.00
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OspreyOsprey Aether 55 Backpack - L/XL - Black - 58 L - Nylon
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£265.00
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Product Information

Full details

The Osprey Aether 55L Backpacking Backpack is designed for adventurers seeking a reliable and comfortable pack for multi-day treks. Its standout feature is the highly customizable Fit-on-the-Fly system, ensuring a near-perfect fit for various body types, providing exceptional comfort and stability on the trail. While its robust design offers superior support, it requires proper adjustment to unlock its full potential.

All features

Age Groupadult
ColourBlack
GenderMale
MaterialNylon
Model Part Number10002876
BrandOsprey

Extended Product Information

FAQs

What is the capacity of the Osprey Aether 55L backpack?

The Osprey Aether 55L has a 55-liter capacity, suitable for multi-day backpacking trips.

Is the backpack waterproof?

The pack is made with bluesign-approved nylon and a PFC-free DWR finish, providing excellent water resistance. For full protection against heavy rain, an integrated raincover is included and should be used.

How do I adjust the fit of the Aether 55L?

The Aether 55L features a Custom Fit-on-the-Fly system for the shoulder straps and hipbelt, along with an adjustable torso length. You can make micro-adjustments to these components while wearing the pack to achieve a personalized and comfortable fit. Refer to the 'Setup' section for detailed steps.

What material is this backpack made from?

The backpack is crafted from durable, bluesign-approved nylon with a PFC-free DWR (Durable Water Repellent) finish.

Does this backpack come with a raincover?

Yes, an integrated raincover is included with the Osprey Aether 55L backpack for added weather protection.

Is this backpack suitable for women?

While listed under 'Male' gender, the highly adjustable Fit-on-the-Fly system allows for a customizable fit across a wide range of body types. Many female users find Osprey's Aether series comfortable when properly adjusted. Osprey also offers women-specific packs (Ariel series) with different geometry.

How should I clean my Osprey Aether 55L backpack?

It is recommended to hand wash your backpack with mild soap and lukewarm water. Avoid machine washing or harsh detergents. Rinse thoroughly and hang it upside down in a well-ventilated area to air dry completely.

Troubleshooting

The pack feels uncomfortable or causes pressure points.

Revisit all fitting adjustments. Loosen every strap and re-adjust systematically, focusing on torso length, hipbelt placement, and Fit-on-the-Fly components for both shoulder straps and hipbelt. Ensure the hipbelt carries most of the weight and the shoulder straps provide support without digging in.

The pack feels unstable or sways while hiking.

Check your load lifter straps and compression straps. Tighten load lifters to pull the top of the pack closer to your back. Utilize all available compression straps (side, bottom, and top) to cinch down your gear and prevent internal shifting. Ensure heavier items are packed close to your back and centered.

Gear inside the pack is getting wet despite the DWR finish.

The DWR finish provides water resistance, but for heavy rain, always deploy the integrated raincover. If the DWR appears to be less effective over time, clean the pack and reapply a new DWR treatment suitable for technical nylon fabrics.

Zippers are stiff or difficult to operate.

Clean any dirt or debris from the zipper teeth using a small brush. Apply a silicone-based zipper lubricant or a bar of graphite (pencil lead) to the teeth to improve glide. Avoid forcing stiff zippers.

Pros and Cons

Pros

  • Highly customizable fit enhances comfort and stability.
  • Robust construction for durability on rugged trails.
  • Excellent load transfer and close-to-body feel.
  • Environmentally conscious materials and PFC-free DWR.
  • Included raincover adds immediate weather protection.

Cons

  • Requires time and effort to dial in the perfect custom fit.
  • Info needed: May be heavier than some ultralight options due to robust features.
  • Info needed: 55L capacity might be limiting for extended trips without resupply points.

Setup, Compatibility & Care

Setup: Achieving Your Custom Fit

  1. Load the Pack: Begin by loading your pack with representative gear weight you'd typically carry. This helps simulate real-world conditions for fitting.
  2. Loosen All Straps: Loosen the shoulder straps, hipbelt, load lifters, and sternum strap.
  3. Adjust Torso Length: While wearing the pack, adjust the torso length using the main adjustment mechanism on the backpanel. The shoulder strap anchor point should sit about 1-2 inches below the top of your shoulder.
  4. Position the Hipbelt: The padded part of the hipbelt should comfortably wrap around the top of your hip bones (iliac crest). Tighten the hipbelt until it feels secure and about 60-80% of the pack's weight is transferred to your hips.
  5. Adjust Fit-on-the-Fly Hipbelt: If equipped, adjust the Fit-on-the-Fly hipbelt wings to ensure they wrap snugly around your hips without gapping or digging in.
  6. Adjust Fit-on-the-Fly Shoulder Straps: If equipped, adjust the Fit-on-the-Fly shoulder strap padding so it conforms to your shoulders without creating pressure points.
  7. Tighten Shoulder Straps: Gently pull down on the shoulder straps until the pack rests against your back. Avoid overtightening; the bulk of the weight should remain on your hips.
  8. Engage Load Lifters: Tighten the load lifter straps (located above the shoulder straps) to pull the top of the pack closer to your body, ensuring the load is stable and close to your center of gravity. They should create about a 45-degree angle.
  9. Fasten Sternum Strap: Cinch the sternum strap across your chest, adjusting its height so it's comfortable and allows for natural arm movement.

Compatibility

This 55L backpack is primarily designed for adult males for multi-day backpacking, trekking, and extended hiking trips. Its adjustable features, however, allow it to accommodate a wide range of body shapes effectively. It pairs well with various hiking accessories, such as hydration reservoirs (sold separately).

Care Instructions

  • Cleaning: For general cleaning, wipe down the exterior with a damp cloth and mild soap. For deeper cleaning, hand wash the pack in a tub with lukewarm water and a small amount of non-detergent soap (like Nikwax Tech Wash). Avoid harsh chemicals, bleach, or machine washing, as these can damage the fabric and coatings.
  • Drying: Hang the pack upside down in a well-ventilated area to air dry completely. Ensure it is thoroughly dry before storing to prevent mildew.
  • Storage: Store the pack in a cool, dry place away from direct sunlight when not in use. Avoid compressing it excessively for long periods.
  • DWR Reapplication: Over time, the PFC-free DWR finish may wear off. You can restore water repellency using a spray-on or wash-in DWR treatment specifically designed for technical fabrics.

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