Test: Osprey Stratos 34 Backpack

Having already owned a few Osprey backpacks, including the large Osprey Aether 60, and with Amandine's fondness for her Osprey Sirrus 36, I was easily tempted by the Osprey Stratos 34. The 36-liter version is also available, but visually I fell for the 34-liter, and I tend to prefer the smallest pack possible to avoid filling it with unnecessary heavy items.

This pack replaces my Millet Aerial 32, which has worn out. I must say that the 30 to 40-liter size is my preferred format for traveling, whether for a weekend or for trips lasting a month (except for cold countries, as lightweight technical layers do take up space!).

UPDATE 2018: We have also tested the ultra-light Osprey Levity 45 since then.

I have now had it for 4 months and I'm providing a quick review based on my travel experience.

Osprey updated the Stratos 34 in 2017. I was surprised by the new look of the AirSpeed mesh trampoline system, which allows for a gap between your back and the pack (I mention this every time, but in warm countries or for more strenuous activities, it's a real advantage).

For the rest, we are on familiar ground: adjustable height, included waterproof cover, hydration pack compartment, integrated whistle on the hip belt... I chose the S/M size in Red Beet color, which is very close to Amandine's larger bag, the Osprey Ariel 55.

When putting it on for the first time, adjustments are necessary. As strange as it may seem, I struggled to adjust it correctly. I pulled and loosened the straps in every direction, but I had the trampoline digging into my shoulder blades. I didn't understand what was wrong until I looked in a mirror: the bag was simply not at the right height. The sensation I had was just off; perhaps it's due to the new trampoline mesh? But all's well that ends well; I had no issues once the bag was properly adjusted.

The Osprey Stratos 34 then becomes a real pleasure to have on your back. With 15 to 20 lbs inside, it feels comfortable on the shoulder supports. I wouldn't recommend exceeding 22 lbs (the empty bag weighs 2.65 lbs in size S/M and 3.07 lbs in size M/L).

Regarding the various pockets, the large one on the front is very convenient for easily stashing a camera battery, a train ticket... but nothing more! So forget about keys, or even a smartphone that's too large. However, there are always the pockets on the hip belt for these items, or the top pocket. The bag is primarily a large cylinder with a few intelligently scattered pockets.

If you plan to put a hydration pack in its designated area, be sure to do it before filling your bag. Once the bag is full, it simply becomes impossible.

The Osprey Stratos 34 is the first backpack where I find absolutely nothing to criticize, as it seems to have been designed specifically for my needs. It's a huge favorite for wonderful adventures that I will share with it in the coming years.

The product tested: Osprey Stratos 34

In partnership with Osprey Europe.