How to Choose a Backpack
REI Co-op Flash 58 Pack - Women's
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Built on an agile Activflex frame, this ultralight women's pack comfortably handles your load while allowing you to twist and turn as you hike.
Shop similar products- Activflex LT perimeter aluminum frame allows torso rotation, yet efficiently transfers the load to the hipbelt
- Structured hipbelt provides a robust level of support for an ultralight pack; hipbelt and shoulder straps are contoured to fit women
- Freeflow LT back conforms to your back and has ventilation channels and a central breezeway to keep you cool
- Ultralight 100-denier high-tenacity ripstop nylon cuts weight, while 210-denier high-tenacity oxford nylon offers abrasion resistance in high-wear areas
- Buckle-secured front stash pocket can accommodate bulky gear; mesh side pockets are perfect for water bottles
- Tip grips are paired with speed hooks to securely hold trekking poles; pack also has multiple lash loops
- Hydration-compatible design accepts most popular types of reservoirs (sold separately); you can route the sip tube over either shoulder
- Stretch-mesh shoulder-strap pocket fits a camera
- Bottom compression straps can be used to attach a sleeping pad
- The REI women's Flash 58 Pack also includes handy hipbelt pockets where you can stash small trail essentials
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
| Best Use | Backpacking |
|---|---|
| Frame Type | Internal Frame |
| Ultralight | Yes |
| Material(s) | Nylon |
| Frame Material | Aluminum |
| Number of Stays | 1 |
| Pack Access | Top |
| Number of Exterior Pockets | 5 + main compartment |
| Gender | Women's |
| Sustainability | From a Climate Label Certified brand |
Buying Advice
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.
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Mountains and Lakes!
Moves with you
11 years ago
Great pack. It moves with me and it feels like the pack is one with my body because of the Activflex frame. I have a bad spine and this one carries the load while allowing my body to move. I never feel tippy or hot in it and can adjust easily on trail. There was a problem with the hip belts when they first released this pack in Spring 2014 and REI gave their usual great service and notified and replaced it for me. I never usually load over 30lbs and this one is great for caring that amount. I am looking forward to testing it out on our Mt. Whitney ascent this summer. So far I LOVE THIS PACK.
Yes , I recommend this product
Inga's Adventures
Kenwood, CA
Great pack for long distance or short trips
10 years ago
I love this pack! I just got off 23 days on the John Muir Trail and this pack was so comfortable, holding the weight close to my center of gravity so that it never felt that heavy, even at my max weight of 35 lbs for 10 days. For shorter trips my total weight is about 25 lbs. I shaved at least 3 lbs off my pack weight when I replaced my old pack with this one, and unlike some of the ultralight packs I've seen, has enough pockets to keep things organized without going overboard. The straps that adjust the front compartment are so helpful because you can put a lot or a little in that section between the compartments. The hip pockets are handy for small snacks and lip balm. I'm going to have this pack a long time.
Yes , I recommend this product
Again at 55
Conyers, GA, United States
Great backpack!
11 years ago
I just bought this backpack and used it for a 15-day trek on the Appalachian Trail. It was comfortable and roomy enough for everything I wanted to carry. My gear was 30-32 pounds. I love the zipper compartments on the shoulder straps and waist straps for keeping my snacks, water treatment, and map handy. I was not in great shape, but I still had no issues with my shoulders or back at all. Many thanks to the REI employee who fitted me with this pack!
Yes , I recommend this product
moderndulcinea
Los Angeles, CA, United States
Light, comfortable, functional, awesome
10 years ago
I purchased this pack for section hiking the AT this summer and tried it out on a 5 day trip to do the Trans Catalina Trail last week. I'm thrilled with it! I'm 5'6" and my back measurement was 18 inches, which puts me a tad too long for most Small sizes and too short for most Mediums. I tested out a few packs before settling on this one, in medium, and I LOVE it. It's big enough to hold a bear canister but not so big that you'll be tempted to take more than you should. :-) The shoulder straps are scooped for a woman's frame (I'm large-busted and this fit me so comfortably). It fit everything I needed for 5 days and I never had back pain or hot spots on my shoulders or hips. The little compartment on the arm strap is perfect for lip balm and the hip belt easily carries a folded map and iPhone (for quick access for pictures!). And it's so light. It just fits like a part of you.
Yes , I recommend this product
MAnderson
Hopefully mine was just a faulty one
10 years ago
I just used this pack for a week on the AT. I LOVED everything about it - nice storage, lightweight, and easy adjustments. It really feels good on the body, even for 7 hours a day. I had to rate it a 3, though, because the pack kept falling off of the frame at the top corners from day 2 on. Between my husband and I, we could not figure out the reason, so we finally had to tie it on with some spare rope. As that's a pretty major component to a hiking pack, I had to take a few stars off. It kept throwing all the weight to my shoulders, which makes every move pretty painful after awhile. Will exchange the pack, though, and hope for the best with my 2nd flash pack.
TinaMarie
Illinois.
Very nice pack.
9 years ago
I am very much a beginner pack packer. I did a lot of research and decided on this one because it suits what I plan to do(for now). I went to REI and was assisted with trying it on and checking out others like it. In the end I went with this one and really like it. I've only loaded it with blankets and weights for practice, but it feels great so far. I could see where the front straps might need a little more padding once I'm doing this without a coat to help. But I loved everything else about this backpack so decided I would work on that part myself if needed. I'll add another update this summer after I use it for a real trip. : )
lksutherland
San Jacinto Mountain 10k'
2 lbs. lighter than the pack I was using!
10 years ago
I was borrowing a friend's Oprey pack for a while. I purchased the REI Women's Flash 58 Pack to shave 2 lbs off my total pack weight. That's a huge number for UL backpacking. I used it the following weekend for a trek to the top of Mt. San Jacinto. The pack sits better on my body, holds all the stuff I need, has lots of extra pockets for small items. I love the clip strap for the water reservoir and the outside pack straps for my sleeping pad. I dig it!
Yes , I recommend this product
Emiry55
Michigan, United States
Love this pack
10 years ago
Super light weight, and holds a lot! I love all the little side pockets and the mesh area holds a sweater/jacket. Loved it!
Foodfan
Carlsbad, CA, United States
Bad Straps
9 years ago
I bought this for a week long backpacking trip in the Sierras and by the second day I had huge bruises on and around my collar bones. The straps offer very little padding. I had to wrap bandanas around the straps for added cushion. The two people I was with had smaller packs and about twice as much padding. Maybe my collar bones are just extra sensitive but it made for a very unpleasant trip.
No, I do not recommend this product
Laur3n
Puntarenas Province, Costa Rica
Dissatisfied
8 years ago
I was so excited when I bought this bag and it worked great for a couple of small backpacking trips when I first got it. However, I am currently on a month long trip around Costa Rica and a week in the frame started popping out of the top corners of the bag. I have tried tying it and taping it but nothing is working. Overall I am extremely disappointed!
No, I do not recommend this product
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