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Flex Capacitor 40L-60L product image - main
On Sale! Item # SDE1G202M

Sierra Designs Flex Capacitor 40L-60L Internal Frame Backpack

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Sierra Designs Flex Capacitor Backpack Series Review

By Dave

Enwild Gear Specialist

The Enwild Difference

Real People

Connect and #HikeRunRoam with us!

Awesome Gear

Get the inside edge on the outdoors.

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Because you deserve it.

What the heck? Yep, the versatile Sierra Designs Flex Capacitor 40L-60L has a look all its own and its gusseted compression system lets its volume swiftly expand from 40 to 60 liters to perform optimally on overnights or multi-day backpacking trips.

Description

  • Expandable volume for unparalleled versatility: The pack's unique flex gusset offers horizontal expansion to properly carry and secure whatever load you're carrying. It doesn't just compress the pack; it tailors the pack to perfectly suit your needs.
  • Y-Flex aluminum stay is an ideal balance of weight and strength: A central aluminum hub and three separate angled stays allow the suspension system to offer stabilizing support while keeping weight to a minimum and providing flexibility to promote mobility.
  • Two available sizes with adjustability to ensure a proper fit: Built-in, easy-to-use adjustability in the shoulder straps enables the pack to be customized to fit your torso length. The Small/Medium size has a 16"-19" fit range and the Medium/Large best fits 18"-21" torso lengths.

Check out all of these other special features!
  • U-shaped zippered top access to the main compartment
  • Two up-front pockets on the shoulder straps
  • Two stretch mesh side pockets
  • Integrated removable hydration sleeve doubles as a streamlined summit sack (hydration system not included)
  • Zippered hipbelt pockets


California residents: view proposition 65  Warning

Technical Specs

Best Use
Backpacking, Hiking
Access
Top loading
Detachable Daypack
Yes
Item Dimensions
Small/Medium: 25" x 12.5" x 12.5"
Medium/Large: 27.5" x 8.5" x 12.5"
Fits Torso
Small/Medium: 16" - 19"
Medium/Large: 18" - 21"
Fits Waist
Small/Medium: 28" - 46"
Medium/Large: 33" - 50"
Frame Material
Aluminum Y Frame
Hydration Compatible
Yes
Sternum Strap
Yes; adjustable
Torso Adjustment
Yes
Volume
2441 cu in - 3661 cu in
Warranty
Limited Lifetime
Type
Internal Frame Backpack
Material
100D Nylon Honeycomb, 420D Oxford
Item Weight
Small/Medium: 2 lbs 12 oz
Medium/Large: 3 lbs 2 oz

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1 Reviews

5 / 5

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Sort By

Meng

07/07/23

New backpack preview

Likes

The suspension system works well and feels comfortable with all my gear. Pockets everywhere allowing gear to be organized. The stretch mesh back pockets are good for dry clothes or putting snacks.

Dislikes

The top access zipper pocket seems too shallow enough to hold much stuff. Same, the hydration sleeve has a small capacity and looks flimsy. I would bring a bigger day backpack if need a summit sack for long-time hiking.