patagonia wheeled duffel 90l Black Hole Bag 100L Whole Earth Provision Co. |

This construction encourages airflow, isolates the packs contents from the body without the added weight of a foam backpanel, and provides support for loads of up to 40 pounds

And because these REI packs dont come with a water bladder, you need to buy one separately (we recommend a 1.5-liter size for the Tarn 12)

While the exposed metal bars pressed into my back, it wasnt a dealbreaker

We found ourselves using the shoulder straps anytime we'd carry the Ozone for more than five minutes, as it only took 20-30 seconds to deploy the system, clipping it to two fast-tech buckles

Outside upper flap pocket dimensions: 5" x 3"

-- Expandable Design -- This backpack size (LxWxH) 11.4 x 5.5 x 17.7 inches / 29 x 14 x 45 cm