New Lightweight Osprey Pack Scoop!

Award-winning packs weigh less but without sacrificing comfort, features or load-carrying punch.

Posted: 24 July 2008
by Jon

Here's a sneak preview of a new for 2009 Osprey Exos pack that's just landed a Silver medal in the OutDoor Industry Awards 2008 at the recent Friedrichshafen trade show.

The Exos will be landing in the UK early in 2009 and is a lightweight rucksac, that doesn't compromise on ventilation and features to save weight. The Exos 58, for example, tips the scales at just 990 grammes, but like the other two packs in the range, uses a 6061-T6 aluminium frame for stabilty with heavy loads and die-cut Biostretch EVA foam for added comfort and ventilation on hipbelt and harness plus a new, ventilating back system for comfort.

One of the key features of the pack is apparently that while the back system is suspended with an air gap, that gap is significantly smaller than on comparable designs, which should make the pack overall more stable by putting the overall centre of gravity closer to the wearer.

Osprey Exos 46 - 857 grammes

The pockets on the packs are made from mesh to minimise weight and components like buckles and zip-pulls have been carefully selected, - says Osprey - to be the lightest on the market. Pack fabric is super-lightweight as well. The pack's other features include the Osprey 'Stow on the Go' trekking pole storage system first seen this year on the Kestrel.

The jury for the awards included UK climber Alan Hinkes and commented:

'The sophisticated structural design provides excellent wearing comfort. Combining a newly developed, superlight air venting back panel with the lightest components on the market, the new Osprey Exos Series minimises weight, yet carries and ventilates superbly. The Exos is a truly innovative product in the superlight pack world.'

Grammes Per Litre

To put it into some sort of perspective, Osprey's produced a table showing the ration between pack weight and capacity. According to their figures, the Exos 58 weighs in at 17 grammes per litre of capacity, compared to 30 gramms per litre for their own Atmos 50.

Soomething like a GoLite Jam 2 would score just over 12-grammes per litre on the same basic, but then that's a minimalist, frameless pack with no ventilation and definite load-carrying limitations. Something closer in function, like a Berghaus Freeflow IV 50 manages 33 grammes per liter, almost twice the weight / capacity ratio of the Exos.


Sounds interesting. The Achilles heel of lightweight packs has tended to be an inability to comfortably carry heavier loads combined with a certain Spartan minimalism - only time will tell if Osprey has the problem licked...

More information on the current Osprey pack range at

Previous article
Schoeller / Mammut Launch Smart Fabrics
Next article
The North Face Bags Innovation Awards

Discuss this story

Interesting table from Osprey where they compare ratios between cpacity and weight, so the new Exos scores about 17 grammes per litre of capacity which is significantly better than other vented packs of a similar capacity.

Something like a GoLite Jam 2 is even more impressive - 12 grammes per liter - but is far more minimalist and with no ventilation or frame at all.

Posted: 24/07/2008 at 11:39

Looks interesting. Now, do I delay my search for a 45-ish litre lightweight pack capable of carrying a decent load....?

Not that I'm keen on air-gap back systems as a rule. Jon, do you have a picture of the back panel and harness? 

Posted: 24/07/2008 at 11:51

I'll see if I can get one The three sizes available will be 58, 46 and 34 litres btw.

Posted: 24/07/2008 at 12:04

See more comments...
Talkback: New Lightweight Osprey Pack Scoop!

Sign up to our weekly newsletter
Sign up to our twitter feed