REI Co-op
REI Co-op Flash 55 Pack - Women's
Best lightweight pack for women tackling multi-day backpacking adventures.
Engineered for comfort and stability on week-long backpacking trips or shorter overnights, this pack is your ideal companion. Its lightweight design features a durable recycled ripstop nylon shell with a water-repellent finish. The adjustable torso and contoured hipbelt ensure a personalized, comfortable fit for loads up to 35 lbs. The versatile roll-top lid detaches to become a waist pack or reduce overall weight. Customizable with the Packmod system, this pack offers multiple pockets for easy access to essentials and hydration reservoir compatibility.
$229.00
Owner Satisfaction
4.4
/ 5
Category Rank
11014
/ 15404
#11014 in Backpacks
Price vs Category Average
+110%
Above average
Best Use
Backpacking
/ Backpacking
Who it's for
- Thru-hikers seeking to reduce base weight and trail fatigue
- Minimalists wanting a pack adaptable to specific trip needs
- Budget-conscious backpackers needing ultralight performance without premium pricing
Who should skip it
- Hikers carrying heavy gear or extended expedition supplies
- Bushwhackers navigating abrasive, dense, or thorny terrain
- People with non-standard torso lengths needing precise fit adjustments
Performance breakdown
Weight-to-Capacity Ratio
Impressively light build that handles substantial loads without unnecessary bulk.
Customization Versatility
Packmod system allows for highly specific gear organization and weight reduction.
Fit Adjustability
Adjustable torso and hipbelt ensure a tailored fit for diverse body types.
Access and Organization
Nine exterior pockets provide intuitive, on-the-go access to trail essentials.
Ventilation Performance
Back panel airflow is solid, though less breathable than suspended mesh designs.
Sustainability Profile
Bluesign-approved materials and recycled fabrics set a high standard for eco-conscious gear.
Key Specs
Best Use
Backpacking
Frame Type
Internal Frame
Ultralight
Yes
Gear Capacity
XS: 53 liters, S: 55 liters, M: 57 liters
Weight
XS: 2 lbs. 10 oz., S: 2 lbs. 11 oz., M: 2 lbs. 12 oz.
Adjustable Torso Length
Yes
Fits Torso Length
XS: 15-17 inches, S: 16-18 inches, M: 17-19 inches
Fits Waist/Hips
XS: 30-38 inches, S: 32-40 inches, M: 34-44 inches
Know before you buy
Yes, it is designed specifically for week-long trips or shorter overnights. With a capacity ranging from 53 to 57 liters depending on the size, it provides ample space for multi-day gear while keeping the overall weight manageable.
The Packmod system allows you to customize your pack's configuration by attaching or removing various pockets and compression straps. This lets you strip down the pack to save weight or add organization options based on the specific needs of your trip.
Yes, the Flash 55 is fully hydration reservoir compatible. It features an internal sleeve and routing ports to keep your water supply secure and accessible while you are on the trail.
The suspension system is optimized for loads up to 35 lbs. Exceeding this weight may compromise the comfort of the contoured hipbelt and the stability of the internal frame.
Yes, the roll-top lid is detachable. You can remove it to reduce the pack's overall weight or convert it into a waist pack for shorter excursions away from your base camp.
No, a raincover is not included with the Flash 55. While the pack is made from durable, water-repellent recycled ripstop nylon, you will need to purchase a separate raincover or use a pack liner if you expect heavy precipitation.
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$229