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Sierra Designs Flex Capacitor 25-40 Pack - Moosejaw
 
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Sierra Designs Flex Capacitor 25-40 Pack
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Sierra Designs Flex Capacitor 25-40 Pack

Sierra Designs Flex Capacitor 25-40 Pack is rated 4.3 out of 5 by 3.
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The Sierra Designs Flex Capacitor 25-40 Pack is a unique take on a lightweight backpack. Depending on your gear, this pack would be great for anything from a thru-hike to an overnight escape to the woods. The Y-FLEX DAC aluminum stay suspension is lightweight and sturdy, able to handle heavy carries. This pack rocks a gusset system that easily expands from 25-40 liters with the adjustment of a few straps. Even though this pack doesn't have a flux capacitor making this a time traveling backpack, it is more than ready for some linear time traveling adventures.

Product Description
Item No.   10465203

The Sierra Designs Flex Capacitor 25-40 Pack is a unique take on a lightweight backpack. Depending on your gear, this pack would be great for anything from a thru-hike to an overnight escape to the woods. The Y-FLEX DAC aluminum stay suspension is lightweight and sturdy, able to handle heavy carries. This pack rocks a gusset system that easily expands from 25-40 liters with the adjustment of a few straps. Even though this pack doesn't have a flux capacitor making this a time traveling backpack, it is more than ready for some linear time traveling adventures.

FEATURES of the Sierra Designs Flex Capacitor 25-40 Pack

  • Expandable Volume
  • 2 Stretch mesh side pockets
  • 2 Stretch mesh hydration pockets on shoulders
  • Zippered hipbelt pockets
  • U shaped top access zipper
  • Small stash pocket in lid
  • Ultralight weight
  • Lightweight "Y" Flex DAC suspension

Product Specifications
Features: Ultralight, Suspenders, Hip Belt Pockets
Weight: 40 oz
Torso Range (Small / Medium): 16 - 19 in.
Weight (Small / Medium): 39 oz
Weight (Medium / Large): 40 oz
Gender: Mens
Best Use: Backpacking
Pack Capacity: 25 Liters / 1525 Cubic inches
Trip Length: Expedition
Frame Type: Frameless
Pack Access: Top
Product Reviews
Rated 5 out of 5 by from Solid pack, carries weight well. This pack uses the same frame/suspension system as the larger 40-60 Flex Capacitor, which carries a lot of weight very well. I use that one for multi-day backpacking. This smaller volume pack weighs nearly the same as the larger one due to this frame. So why might you want such a solid frame for a 20l-40l pack? Because desert hiking generally requires slogging a lot of water, and this pack does so with aplomb. 20-30lbs is absolutley no problem with this pack, I can hike all day in comfort with that kind of load. The flexible capacity system is highly underrated IMO and the pockets are excellent, construction is great, compression straps lock your load right down. On top of that it looks good, and is kind of sleek, so no worries when bushwacking that something will snag. This is my new favorite pack and just makes me want to get back out there.
Date published: 2021-03-27
Rated 4 out of 5 by from Much smaller fit and capacity than expected Much of the positive comments is accurate. I tried it out at home and then returned it. The one-size (S/M) is just too small for my 20.5" torso size. The tip of the padding on the shoulder straps barely reaches the nipple area so the unpadded strap part digs into the breast a little. I couldn't make it fit right. The top of the frame extends above the top of the shoulders and it is easy to bump the noggin on the protruding stays. For me anyway. The maximum capacity feels much less than the advertised 40 L. I have two other 40 L packs. I packed the same stuff in each and this one side by side. I could not get everything in this one that I could get easily in the others with room to spare. The bottom of this pack is not flat, but curves upward, reducing the ease of stuffing. It doesn't stand up at all. The red buckles are brighter and pinker than the photos suggest. Too bright for me. The top pocket is much smaller than expected, and is not functional when the pack is fully stuffed.
Date published: 2020-12-15
Rated 4 out of 5 by from Great pack overall, works as advertised I have taken this on a few day hikes so far and it has been as good as advertised. The expandable feature keeps the pack well secured with various size loads, more so than typical compression straps or a roll top. It is comfortable to wear with generous padding and the frame is very sturdy for this pack size. Tons of pockets as well, I can hold a whole days worth of food in the hip belt pockets and shoulder strap pockets. Lastly, I wasn't sure about the zip top opening but it is a good thick zipper and more accessible than a roll top or cinch top with top lid. I gave it 4 out of 5 because I'm worried about the durability of the materials. Water bottles are not the thickest mesh and I see some potential vulnerabilities elsewhere.
Date published: 2020-05-06
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What is torso range for M/L? It's not in the spec chart.

Asked by: JulieK
Hi JulieK, great question! The size option actually only refers to the waist belt, S/M=29-32" and M/L=32-35". The torso range for this pack is 16-19", I hope this helps!
Answered by: Marty Moose
Date published: 2020-12-01

Is this pack compatible with reservoirs? Or does it just have the two interior bottle pockets?

Asked by: KNill
That's a great question! This pack is not reservoir compatible. It just has two hydration pockets :(
Answered by: Foxxy Cleopatra
Date published: 2021-08-03
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Size Guide