Gregory
Gregory Octal 55 Women's Backpack
Best ultralight pack for women tackling long-distance backpacking trips.
This is a consignment listing for the innovative Gregory Octal 55 Women's internal frame backpack. It tips the scales at just 2.5 pounds but is equipped with a feature set and load-hauling capability that most packs of this weight cannot offer. Designed and tested by women, this pack caters to female hikers with shoulder harnesses contoured to fit the female figure and hipbelt panels built to adjust to women's hip angles. It also features narrower backpanels reflecting ergonomic differences. The suspension system utilizes an ultra-lightweight 7001 aluminum perimeter frame with anti-barreling support for balanced and stabilized weight transfer to the load-bearing lumbar support, minimizing fatigue. Comfort is enhanced by a ventilated backpanel and dual-density padding in the harness and hipbelt. The pack offers over 3100 cubic inches of storage capacity and features a removable top lid with internal storage, which can be replaced by an ultralight weather flap when removed. External storage includes a large front stretch pocket and large side stretch water bottle pockets. It also includes zippered hipbelt pockets, trekking pole attachments, a front harness quick-stow feature for sunglasses, and an included raincover. The pack is hydration compatible with an integrated sleeve and exit port (hydration system sold separately). Available sizes mentioned relate to torso length: Xsmall (14"-16"), Small (16"-18"), and Medium (18"-20").
$209.95
Owner Satisfaction
4.6
/ 5
Category Rank
333
/ 1461
#333 in Camping & Hiking
Price vs Category Average
+16%
Above average
Weight
2.5
/ pounds
Who it's for
- Thru-hikers prioritizing speed and minimal base weight
- Warm-weather backpackers prone to overheating on the trail
- Women seeking a pack tailored to their specific anatomy
Who should skip it
- Hikers who prioritize rugged durability over weight savings
- Backpackers carrying heavy gear for extended expeditions
- Organized hikers who prefer dedicated pockets for small gear
Performance breakdown
Weight-to-Capacity Ratio
Ultralight construction that refuses to compromise on substantial gear-hauling capability.
Ergonomic Fit
Specifically contoured harness and hipbelt geometry tailored for the female physique.
Ventilation Efficiency
AeroSpan suspension keeps air moving freely across the back during high-exertion climbs.
Load Transfer
Aluminum perimeter frame effectively shifts weight to the hips, minimizing shoulder fatigue.
Storage Versatility
Removable lid and smart external pockets offer flexible packing options for varied trips.
Trail Accessibility
Thoughtful features like sunglass stow and quick-access pockets keep essentials within reach.
Key Specs
Weight
2.5 pounds
Capacity
55 Liters / >3100 cubic inches
Frame
Ultralight 7001 aluminum perimeter frame with anti-barreling support
Suspension
AeroSpan suspension with 360-degree moisture-wicking ventilation
Torso Sizes Available
Xsmall (14"-16"), Small (16"-18"), Medium (18"-20")
Know before you buy
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.
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