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REI Co-op Flash 55 - Women's Review

A good option for quick overnight hikes and ultralight expeditions where weight matters
REI Co-op Flash 55 - Women's
Photo: REI Co-op
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Price:  $199 List | $199.00 at REI
Pros:  Lightweight, easy to access side pockets, removable pockets and straps
Cons:  Fixed torso length, rigid feeling hip belt
Manufacturer:   REI Co-op
By Elizabeth Paashaus ⋅ Review Editor  ⋅  Sep 3, 2020
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61
OVERALL
SCORE


RANKED
#8 of 14
  • Comfort and Suspension - 45% 5
  • Organizational systems - 20% 8
  • Weight - 20% 8
  • Adjustability - 15% 4

Our Verdict

If you are looking for a lightweight pack to go with your weight-conscious tent and sleeping bag, the REI Flash 55 is a comfortable and versatile option. Very few packs give you the option to add and remove features to suit your personal packing style as the Flash 55 does. With removable pockets and straps, ultralighters will delight in being able to cut down their ounces even further and organization lovers will appreciate the fully loaded feature set. The Flash 55 is well-suited to lightweight trips and may not be the best for longer adventures unless the rest of your kit can stay under 30 pounds.

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Awards  Editors' Choice Award Editors' Choice Award  Best Buy Award 
Price $199.00 at REI$255 List$249.95 at REI
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Pros Lightweight, easy to access side pockets, removable pockets and strapsComfortable, lightweight, supportive suspension, simple design, large pocketsComfortable and supportive, fully-featured with pockets and access points, adjustable torso and hip beltComfortable, lightweight, good set of features, large stow pocketsUltra comfortable, roomy, inexpensive, durable, can fit a bear can horizontally, low center of gravity, airy mesh frame
Cons Fixed torso length, rigid feeling hip beltNon-ventilated back panel, less organizational featuresMesh pockets lack durabilitySimple suspension, lacks supportNot many bells and whistles, set torso adjustment points, no back stash pocket
Bottom Line A good option for quick overnight hikes and ultralight expeditions where weight mattersA durable bag with all the right pockets and suspension that will keep your back, hips, and shoulders comfortable all dayA comfortable and supportive suspension, a comprehensive feature set, and adjustability all in a lightweight packageThe Octal 55 is lightweight, well-featured, and provides for tons of storage spaceThis simple pack combines comfort, volume, and price; it will take you anywhere and won’t break the bank
Rating Categories REI Co-op Flash 55... Ultralight Adventur... Gregory Maven 65L Gregory Octal 55 Osprey Renn 65
Comfort And Suspension (45%)
5.0
9.0
8.0
7.0
7.0
Organizational Systems (20%)
8.0
8.0
7.0
6.0
4.0
Weight (20%)
8.0
8.0
6.0
8.0
6.0
Adjustability (15%)
4.0
4.0
7.0
3.0
7.0
Specs REI Co-op Flash 55... Ultralight Adventur... Gregory Maven 65L Gregory Octal 55 Osprey Renn 65
Measured Weight (pounds) 2.7 lbs 2.7 lbs 3.4 lbs 2.6 lbs 3.6 lbs
Volumes Available (liters) 55 68 45, 55, 65 45, 55 50, 65
Organization: Compartments Lid, double side pockets, front pocket, hip belt pockets, shoulder strap phone pocket, main compartment Side pockets, front pocket, hip belt pockets, main compartment Lid with two pockets, front pocket, side pockets, hip belt pockets, main compartment Lid, front pocket, side pockets, hip belt pockets, main compartment Lid, side pockets, hip belt pockets, main compartment
Access Top Top Top, side, bottom Top Top, bottom
Hydration Compatible Yes Yes Yes Yes Yes
Rain Cover Included No Yes Yes Yes
Women's Specific Features Women's specific fit S-Curve Shoulder Straps Women's specific fit Women's specific fit Women's Specific fit
Sleeping bag Compartment No No Yes No No
Bear Can Compatible Yes - Vertical Yes - Vertical Yes - Vertical and Horizontal Yes - Vertical, tight fit Yes - Vertical and Horizontal
Main Materials Ripstop nylon; Oxford nylon (bluesign® approved) 500 Cordura Nylon Nylon 600D polyester
Sizes Available XS, S, M S, M, L, XL, Kids XS/S, S/M XS, S, M One size, with adjustable torso

Our Analysis and Test Results

REI often dabbles with ultralight equipment, and we think they have done a pretty good job with the REI Flash 55. While there are lighter packs on the market, this one serves a niche of people who appreciate the low 2.7-pound weight but don't want to sacrifice organizational pockets and straps. The Flash not only has the pockets, but many of them are removable for trips where you want to shave off every ounce you can.

Performance Comparison


Fall overnight trips are a great use for the REI Flash 55.
Fall overnight trips are a great use for the REI Flash 55.
Photo: Adam Paashaus

Comfort & Suspension


For a lightweight pack, REI has incorporated a strong, stable suspension system. When fully loaded with up to 35 pounds, the weight is well distributed to the hips and doesn't sag onto your shoulders. Our testers feel that the padding is adequate but rigid and can cause discomfort when you aren't used to it. Some users love the prominent lumbar curve and find it supportive, while others feel like there is a watermelon pushing into their backs. As with many packs, comfort is going to depend on your unique body shape.

This light pack carries close to the body and distributes loads well.
This light pack carries close to the body and distributes loads well.
Photo: Adam Paashaus

Organizational Systems


Organization versatility is where the Flash 55 shines. Our testers love the ability to take off the pockets that they find unnecessary and keep their favorites. Some people don't use hip belt pockets or exterior straps, and this is one of the only models that give you the option to take them on and off.

The shoulder strap phone pocket is large enough for all but the...
The shoulder strap phone pocket is large enough for all but the bulkiest phones.
Photo: Adam Paashaus

The phone pocket on the shoulder strap is a bit of a novelty that some people seem to love and others don't care for. It is highly water-resistant, making it a very convenient place to keep your phone if you listen to music on the trail or use navigation apps. Still, we found that the top flap that secures with a magnet was continually opening itself up, doing away with any water protection that it had.

Water bottle side pockets are notorious for being hard to get bottles in and out of while wearing the pack, but the Flash has found a good solution. Instead of one pocket on each side, they have included two. One is smaller and sits closer to your back with a slight angle that helps you slip your bottle back in without angling so far forward that you bump your elbows.

In all of our testing over the years, this pack has done the best...
In all of our testing over the years, this pack has done the best job with an angled bottle pocket. It's angled enough to help get the bottle in but not so angled that it interferes with your elbow.
Photo: Adam Paashaus

Weight


At 2.7 pounds, this model is lighter than most but still has a strong enough frame to carry moderate loads up to around 30 pounds. While the materials used are lightweight, they aren't so thin that we are concerned about durability. The only durability issue we have run across in testing and reading others' reviews is with the mesh water bottle pockets. They tend to tear somewhat easily, so be careful what you rub up against.

For such a light pack, the suspension is sturdy and well-padded.
For such a light pack, the suspension is sturdy and well-padded.
Photo: Adam Paashaus

Adjustability


The Flash 55 has minimal ability to adjust, so you'll need to make sure it fits just right when you buy it. The torso length is fixed, so we recommend getting sized at your local outfitter. The shoulder strap padding is nice and long, meaning that even on broader chested women, there is enough padding to wrap under the arms.

Like many lightweight packs, the hip belt length is fixed as well. The padding comes fairly far around the pelvic bones of average-sized women, but larger-hipped women will find that it stops short of where they would like for comfort. The 1.5-inch webbing on the hip belt is better than thinner webbing but will still dig in uncomfortably if the gap between the hip padding is too long.

While the padded section of the hip belt isn't extendable, the...
While the padded section of the hip belt isn't extendable, the 1.5-inch wide webbing is nice and long leaving a wide range of fit.
Photo: Adam Paashaus

Value


The mid-range price on the Flash 55 offers entry into ultralight gear for those not yet willing to drop the big bucks to save a few ounces. While you can find many packs that are lighter and carry just as well or a bit better, they typically will cost more. If you are ready to go lighter weight but can't justify the investment, check out this model for an option that might hit all the sweet spots for you.

Conclusion


The REI Flash 55 is a great entry-level ultralight pack due to its low price and comfort under loads that might be heavier than intended while you work out how to transition to ultralight backpacking. This also makes it a good choice for shorter trips when you may not have all the lightest gear, but your food weight is lower.
The REI Flash 55 is a budget option that approaches the ultralight...
The REI Flash 55 is a budget option that approaches the ultralight realm.
Photo: Adam Paashaus

Elizabeth Paashaus