Gregory Octal Backpack

The Octal 55 is specifically engineered for women with shoulder harnesses contoured to fit the female frame and hipbelt panels designed to adjust to women's hip angles. It also features a narrower backpanel to better suit ergonomic differences, ensuring a more stable and comfortable carry.

Yes, the top lid is fully removable. If you choose to leave it behind, the pack includes an ultralight weather flap that covers the main compartment to keep your gear protected while reducing overall weight.

The AeroSpan system uses a tensioned perimeter frame that creates a gap between your back and the pack, allowing for 360-degree airflow. Combined with moisture-wicking materials, it is highly effective at reducing sweat buildup during strenuous hikes.

Sizing for this pack is based on your torso length, not your overall height. You should measure from your C7 vertebra (the bony bump at the base of your neck) down to your iliac crest (the top of your hip bones) to select the correct X-Small, Small, or Medium size.

Yes, a dedicated raincover is included with the pack and is conveniently stored in the top lid pocket for quick access when the weather turns.

Yes, the Octal 55 is hydration compatible. It features an internal sleeve to hold your reservoir and a dedicated exit port for the hose, though the hydration system itself is sold separately.