REI Co-op
REI Co-op Flash 18 Print Pack
Best ultralight pack for minimalist day trips or travel.
This ultralight pack is designed for hikers seeking a minimalist approach to carrying essentials. Constructed from durable, water-resistant recycled ripstop nylon, it features a PFAS-free DWR finish for moisture protection. Its versatile design includes detachable straps for weight customization and a padded back panel that doubles as a sit pad. The pack is hydration-compatible and offers a comfortable carrying experience with breathable mesh shoulder straps. A quick-pull drawcord secures the top, while a zippered side pocket provides easy access to smaller items. It conveniently converts into its own stuff sack for compact storage.
$44.95
Owner Satisfaction
4.5
/ 5
Category Rank
7453
/ 15404
#7453 in Backpacks
Price vs Category Average
-59%
Below average
Gear Capacity
18
/ liters
Who it's for
- Travelers needing an extra daypack, ultralight hikers, minimalist adventurers
- Casual hikers, urban explorers, students, and daily commuters
- Budget-conscious adventurers, first-time hikers, students, and casual users
Who should skip it
- Backpackers carrying heavy loads, hikers needing robust support
- Organized packers, gear-heavy adventurers, and multi-day trekkers
- Mountaineers, bushwhackers, and users who frequently abuse their gear
Performance breakdown
Weight Efficiency
At under ten ounces, it disappears on your back during long treks.
Packability
Collapses into its own pocket for effortless storage in larger luggage.
Versatility
Removable straps and a sit-pad insert adapt quickly to changing needs.
Access Speed
Drawcord closure allows for rapid, one-handed entry while on the move.
Durability
Recycled ripstop nylon handles trail abrasion well for such a lightweight build.
Hydration Integration
Internal sleeve and hose port make water management seamless and intuitive.
Key Specs
Gear Capacity
18 liters
Weight
9.5 ounces
Reservoir Compatible
Yes
Material
70-denier recycled ripstop nylon with polyurethane coating (bluesign approved)
Pack Access
Top Load
Number of Exterior Pockets
1
Hipbelt
Yes
Dimensions
18 x 10 x 8 inches
Know before you buy
Yes, it is designed specifically for hiking. With an 18-liter capacity, it is sized perfectly for carrying the essentials like an extra layer, snacks, and water for a few hours on the trail.
Absolutely. The pack includes an internal sleeve for a reservoir and a dedicated hose exit port, making it easy to stay hydrated while you move.
The padded back panel provides structure and comfort while you are wearing the pack, but it is also removable. You can pull it out to use as a makeshift sit pad when you stop for a break on the trail.
It is water-resistant. The pack is made from durable ripstop nylon with a PFAS-free durable water-repellent (DWR) finish, which helps shed light rain and moisture, though it is not fully waterproof in heavy downpours.
Very compact. The entire pack is designed to stuff into its own internal pocket, allowing you to pack it down into a small bundle for travel or storage.
Yes, both the waistbelt and sternum strap are detachable. This is a great feature if you want to shed a little extra weight or prefer a more minimalist carry for shorter trips.
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