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Sierra Designs Flex Capacitor 40-60 Internal Frame Backpack

Purchase Flex Capacitor 40-60
$164.96
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Sierra Designs Flex Capacitor Backpack Series

By Troy

Enwild Gear Specialist

The Enwild Difference

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Because you deserve it.
The truly innovative Sierra Designs Flex Capacitor 40-60 backpack has an integrated, gusseted compression system that lets it swiftly expand from a 40 liter to a 60-liter capacity. In spite of its lightweight design, it's still capable of carrying heavy loads.

Description

The truly innovative Sierra Designs Flex Capacitor 40-60 backpack has an integrated, gusseted compression system that lets it swiftly expand from a 40 liter to a 60-liter capacity. In spite of its lightweight design, it's still capable of carrying heavy loads.

Balancing weight and performance, the pack utilizes a Y-shaped DAC aluminum suspension system to ensure vertical rigidity while allowing the top portion of the pack to flex with your movement. The result is maintained load stability without excessive bulk or weight. Raised padding in the lumbar and scapula regions of the backpanel provide support and cushioning while also creating space for airflow. A padded and adjustable hipbelt further enhances balance while load lifter straps and a sliding sternum strap allow you to dial in fit. The pack is available in Small/Medium (best fits 16"-19" torso lengths) and Medium/Large (18"-21") sizes to make certain that the wearer best benefits from the structural design of the pack.

The top-loading pack employs a U-shaped zipper to offer wide-open access to its interior. By adjusting the horizontal compression system that runs across the face of the pack, you can utilize the full 60-liter capacity or cinch down to secure contents and "shrink" the pack to a more streamlined 40 liters. A stash pocket on the lid, stretch mesh side pockets, and two large hipbelt pockets provide additional storage and organizational options. Other features include front harness pockets that are perfectly sized for a water bottle (bottle not included), ice axe/trekking poles loops, and an internal hydration sleeve (hydration system not included) that can be removed if not needed or if you simply want to shave ounces.

The Sierra Designs Flex Capacitor 40-60 internal frame pack is available in your choice of colors and sizes.

  • Expandable volume
  • Stretch mesh side pockets
  • Stretch mesh harness pockets
  • Zippered hipbelt pockets
  • U-shaped top access zipper
  • Small stash pocket on the lid
  • Lightweight "Y" Flex DAC suspension system
California residents: view proposition 65  Warning

Technical Specs

Best Use
Backpacking
Access
Top loading
Detachable Daypack
n/a
Item Dimensions
27.5" x 11" x 10"
Fits Torso
Small/Medium: 16"-19"
Medium/Large: 18"-21"
Fits Waist
Small/Medium: 29"-32"
Medium/Large: 32"-35"
Frame Material
DAC aluminum
Hydration Compatible
Yes
Sternum Strap
Yes; Adjustable
Torso Adjustment
n/a
Volume
Small/Medium: 2380-3440 cu in
Medium/Large: 2563-3661 cu in
Warranty
Limited Lifetime
Type
Internal Frame Backpack
Material
100D Nylon-Poly Ripstop and 420D Nylon Oxford
Item Weight
Small/Medium: 2 lb, 9 oz
Medium/Large: 2 lb, 10 oz

15 Reviews

5 / 5

(15)
(0)
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Sort By

Vasyliy

05/26/22

Top quality backpack

Likes

I like this backpack so much and bought it for my lightweight adventures, is very light and looks very cool!

Dislikes

n/a

Vasyliy

08/28/21

Excellent backpack

Likes

Very comfortable for me, many great features, lightweight, excellent quality, large hip belt pockets.

Dislikes

color(

Gary

08/14/21

Light weight, Good suspension system

Likes

This pack is very light, but with great suspension system.

Dislikes

Side pocket is not very friendly for using the water bottle.

Sergii

02/27/21

Very versatile, top quality product.

Likes

his pack is awesome. It replaces at least 2 packs by expanding from 40-60 liters. Quality from Sierra Designs is superb. The front shoulder and hip pockets are fantastic for holding odds and ends that you want quick access to while hiking. I can’t say enough about how great this pack is. Just buy it, you won’t regret it.

Dislikes

ok

Suri L.

10/29/20

large space for hiker

Likes

it's light-weight even though large space. love it carrying all stuffs for hiker

Dislikes

love everythings

Selena E.

10/12/20

nice backpack for hiking

Likes

trendy designs, large space, light weight backpack. good for carrying hiking stuffs

Dislikes

waist belt to is a bit heavy

Jenny L.

10/12/20

large enough to pack all stuffs

Likes

I love its large space, flexible designs which enable to expand to larger capacity.

Dislikes

not much.

Yaeseul L.

09/16/20

bought it to use hiking

Likes

love this backpack, large space, great design, lightweigt.

Dislikes

you can expand space inside using straps which is very useful

Eric C.

08/26/20

Great pack for everything

Likes

I really like the expand-ability of this pack. I now have about 80 miles on it and love almost all aspects of it. The bag is very light for a traditional internal frame. The sizing is great and I am really digging the shoulder pockets. Not sure how long term hold up will be, but the materials all feel solid.

Dislikes

Top zippers could get caught less.

Dennis L.

08/22/20

stylish, lightweight, large camping backpack

Likes

stylish, lightweight, large camping backpack. it's my best camping backpack ever! gonna buy for some of my friends.

Dislikes

strap is a bit weak I guess.

Jessie L.

08/13/20

large space for hiker

Likes

I bought it for my boyfriend who loves hiking, and he loved it. he said it's large enough to pack lots of his hiking stuffs and light-weight.

Dislikes

too many straps.. but still loves it!

Ashley L.

08/10/20

great backpack for hiking

Likes

size, space, lightweight is great for backpacking. I love it because it help me carry heavy stuffs easily.

Dislikes

little bit hard to lock up every zips, still great.