
Review Summary
2023-05-31T03:19:08
This backpack is absolutely love. very light and roomy, comfortable fit. I definitely recommend it.
Ihor P.
2023-02-01T19:00:00
Ordered 2 flex capacitor packs for me+my son. Such a smart design--ready to go a trekking. Plus--with 1.21 gigawatts--we'll be backpacking to the future!
Daniel D.
2021-11-23T19:00:00
Excelent for multy-days packrafting, from 2-3 days up to 2week autonomus trips. lav it
Dmitriy L.
2021-09-21T20:00:00
I recently used this pack over 40 miles in the Sawtooth's and hiked through 6-8 inches of snow and over multiple passes. It is a great addition when I need more room for more down in the cold, and need to save some weight somewhere. I have an Atmos 65, Arctery'x Bora and others so I have some experience to say this is worth buying if you want to save a couple pounds to carry a couple pounds in more down for the teens temps and/or below like I did. I probably wouldn't go over 45 pounds in this though as it did feel a little weighed down when loaded up but it moved/flexed well.
Brandon P.
2021-08-02T20:00:00
Good bag for the price. I got it on a 25% off sale. It's comfortable and the hip belt and shoulder belt pockets provide a lot of reachable space. It is also quite light when empty. The lack of exterior gear loops and lash points is the main downside, but with the ability to cinch the bag to your needed capacity you can pretty much carry whatever you need inside. Sometimes it just looks a bit lumpy. Note that I am 6'3" 185 lbs and I bought the large. If I lose much more weight the hip belt wont be able to tighten any more and essentially wont fit me. Plan accordingly.
Eric R.
2021-07-15T20:00:00
For a well engineered pack for light wt... it ranks right with the best. I could not use it ,just too small . I`am a 39 waist @ 250 lbs, 6"2.
stan k.
2021-07-01T20:00:00
Lightweight and very comfortable backpack. I am 100% satisfied
Kirill B.
2021-06-24T20:00:00
Great concept for someone who wants one pack for weekends and week long outings. Pro's: Good quality materials and construction and carries well for light to moderate loads. Love the waist belt and shoulder strap pockets. Con's: Top opening needs a compression strap and the lid pocket is a bit small. My #1 issue is squeaking...with every step a loud very annoying squeak.
brian a.
2021-06-12T20:00:00
FINALLY FOUND A USEFUL, NONGIMMICKY, PACK. Durable. Ultralight. No zipper on the bottom or front of the pack to add weight nor fail and dribble your gear along the trail. Only one small pocket on the pack to save weight and the rest of the small pockets on the harness and belt--where you really need them to access things while hiking. Now I need a one-man tent without the wasted weight of vestibules and vents in the rainfly--both gimmicks which are useless and the "vents" will drowned you in a blowing rain.
Jay
2021-06-03T20:00:00
I have used the heck out of the back. Taken it on the full JMT, done a bunch of 14ners in the Sierras, and load of desert backpacks. I have loaded it up with 35 pounds of gear, food, bear can (Expedition Baracade), and on top of the 35 lbs, a 12 pack of beer, ice and dry ice for a total pack weight of 50 plus. I used it in winter snow camps with 50 plus lbs as well. Love the pack, carries the heavy loads well and the shoulder strap pockets are a great place for my in reach and my phone. I have both the 40-60 and the 60-75. Love the pack.
Brian D.
2021-05-24T20:00:00
First trip was great. Did some adjusting but the pack was comfortable and very spacious. Looking forward to putting in some more miles and using all it's features.
Jerry B.
2021-05-09T20:00:00
I?m glad I bought the backpack. Only down side is if you need something at the bottom of the pack you have to take everything out. It would be nice to put a zipper down the side so you wouldn?t have to take everything else out. Other than that it?s been great.
Stephen H.
2021-04-08T20:00:00
Seriously awesome pack. It has a very simple and functional design. The pack is very comfortable to wear for long rucks and is an outstanding piece of gear for multi-day backpacking adventures. I cannot believe how lightweight it is and everything about it feels rugged and built to last. I'd give it 10 stars if there was an option.
Nicholas L.
2021-04-05T20:00:00
Just bought the pack and have not used it yet, but the design and function seem very well thought out and versatile. It was also one of the lightest packs I found for the size and price, which was my main motivation for going with this pack.
Michael D.
2021-03-12T19:00:00
Just came back from 9 days family thru-hike in Likiya route in Turkey. Had to wear up to 25 kg (55 pounds) for whole family (inc 5-7 kg of just water). The pack did great! Even better than my heavier excpedition packs for 3+weeks hiking-packrafting trips i've used before. Shoulder pockets are excelent and fit even full 1L Befree filter in it. Waist pockets also made soooo good, they are big, they open and close with single hand. Excited to try to use it in combo with Flex Lumbar 7-10 on a route, hope they will fit as i ve tried them at home.
Dmitriy
2020-11-13T11:57:52
that's it. it's good weight. good capacity. it's perfect to multiful days trip
MOON K.
Imported
100D Nylon-Poly Ripstop/420D Nylon Oxford
Y Flex DAC
60-75L (3661-4576 cu. in)
18 - 21" (45.7 - 53.3cm)
S/M waist belt: 29" - 32" (73.7 - 81.3cm)
M/L waist belt: 32" - 35" (81.3 - 88.9cm)
28 x 11 x 12" (71 x 28 x 30.5cm)
S/M waist belt: 2 lbs 10 oz (1.19kg)
M/L waist belt: 2 lbs 11 oz (1.21kg)
054003819589
Best pack I own
By Brian D.
I have used the heck out of the back. Taken it on the full JMT, done a bunch of 14ners in the Sierras, and load of desert backpacks. I have loaded it up with 35 pounds of gear, food, bear can (Expedition Baracade), and on top of the 35 lbs, a 12 pack of beer, ice and dry ice for a total pack weight of 50 plus. I used it in winter snow camps with 50 plus lbs as well. Love the pack, carries the heavy loads well and the shoulder strap pockets are a great place for my in reach and my phone. I hav...
View full Review
Needs larger hip belt for larger men/woman .
By stan k.
For a well engineered pack for light wt... it ranks right with the best. I could not use it ,just too small . I`am a 39 waist @ 250 lbs, 6"2.
Presenting the Sierra Designs Flex Capacitor Pack Series, a trio of backpacks that redefine versatility. Each pack in this impressive line-up is equipped with an adjustable volume feature, designed to cater to both short expeditions and long, ambitious adventures. The secret lies in the Flex Capacitor's Y-flex suspension system, a standout feature that enables the pack to comfortably bear loads beyond its weight class.
The Flex Capacitor comes in three sizes for optimal adaptability - 25-40L, 40-60L, and 60-75L. Whether you're on a quick day trip or a week-long backpacking journey, there's a Flex Capacitor Pack tailored to fit your needs. Every pack in this series features a practical bucket lid with a stash pocket for convenient storage, and dual stretch pockets on the shoulder straps and sides to handle your 'shove it' needs.
The Flex Capacitor series boasts an ultralight design complemented by a 'Y' Flex DAC suspension system, establishing a fine balance between lightness and robust support. These packs also provide multiple storage solutions including zippered hip belt pockets and a U-shaped top access zipper for quick and easy access to your belongings.
Select the Flex Capacitor Pack Series - the perfect fusion of versatility, comfort, and efficiency for all your adventures.
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