For those who have not heard it yet, Osprey has launched improved versions of their popular packs. So now you have Osprey Sirrus AG and Osprey Stratos AG. I assume you know, the Sirrus is for women and the Stratos for men. The letters AG mean the anti-gravity suspension system. But strictly speaking, they do not call them AG series, they use the term “AG inspired”.
The anti-gravity system
The anti-gravity system includes a nicely ventilated back structure with a single piece of highly breathable suspended mesh that covers the back panel and the hip belt, see the picture below. So you have an increased comfort even in warm conditions. This system has been introduced in several series of Osprey, like the Manta, Mira, Atmos, Aura, and also in Poco child carrier packs. But this is not all. Osprey just announced the AG system for Aether and Ariel packs as well.
Although they speak about ‘AG inspired’ design, what I see in these Stratos and Sirrus series looks more like the anti-gravity than what I see in their new Aether and Ariel AG series.
Osprey Stratos AG inspired
The Stratos series has been around for some time, but as you realize it has been improved. The anti-gravity system has arrived here as well, so you have packs of 24, 26, 34, 36, and 50 liters with this new suspension system.
For all packs in the series, the most important features include:
- AirSpeed trampoline suspended mesh back system. This is the AG version, as compared with the previous models. In my view, the tensioned mesh system is the best ventilation system that exists. You can find it in many Deuter Futura packs, in some Gregory’s packs, and in some other models of Osprey as well. If you are not familiar with the previous version, you should know that the trampoline-type mesh is quite different in the new model. It is fair to say that not everybody likes the AG system.
- Integrated & detachable rain cover.
- Adjustable torso length. This applies to all models, even the smallest in the series, of 24 liters. I love to see this feature. This is the biggest change together with the AG mesh.
- External hydration sleeve. This again applies to all models.
- Stow-on-the-Go trekking pole attachment.
- Access points: This is interesting so pay attention, there are differences:
– Front panel access is in the models 24 and 34 liters.
– Top lid access for the models of 26, 36, and 50 liters.
- Twin zippered hip belt pockets.
- Sternum strap with emergency whistle.
- These are lightweight packs, with the weight in the following range:
– 1.25 kg for Stratos 24.
– 1.67 kg for the largest in the series Stratos 50.
- Bottom compartment: this is available in the Stratos 50, 36, and 34. The smaller models 26 and 24 liters do not have it.
- All Mighty Guarantee applies for all the models in the series.
For those who might be interested, all packs from the previous version (without the anti-gravity system) are presented in the site. So please see these Stratos 24, Stratos 26, Stratos 34, Stratos 36, Stratos 50.
Osprey Sirrus AG inspired series
This is the women-specific design with all basic features the same as in the Stratos model for men. The series includes packs of 24, 26, 36 and 50 liters. I do not know if Sirrus 34 AG exists, could not find any information about it. Note, the Sirrus 36 and Sirus 50 are described in detail in my separate reviews.
The weight of these packs is in the range:
- 1.16 kg for the Sirrus 24 AG.
- 1.63 kg for the Sirrus 50 AG.
The previous model Sirrus 24 without the anti-gravity system is presented in the site and you can read about it here.
So to conclude this short news about the Osprey Sirrus AG and Osprey Stratos AG backpacks, the key new features here are the following:
- AG inspired suspension.
- Adjustable harness in all sizes.
In the moment of writing this text, these new packs are still not available on Amazon, but this may be just the matter of days. So stay tuned, there will be more information here about these new packs.
Thank you for reading. It will be great to hear from you, there is a comment box below. Have a nice day.