SKU: 79894273372

Sierra Designs 40-60L Flex Capacitor Rucksack

Sale price$169.16 Regular price$187.95
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

Sierra Designs 40-60L Flex Capacitor RucksackABOUT THE Flex Capacitor 40 60 Expand your gear, extend your adventures The lightweight backpack of your dreams is here. Meet the versatile pack that hauls it all. The Flex Capacitors is a beast of backpacking pack, constructed from durable nylon for rough conditions in the backwoods and built with adjustability in mind. Loosen the expanding horizontal gussets for an additional 15 20L of cargo capacity on longer backpacking trips, or cinch it tight

ABOUT THE Flex Capacitor 40-60

Expand your gear, extend your adventures

The lightweight backpack of your dreams is here. Meet the versatile pack that hauls it all. The Flex Capacitors is a beast of backpacking pack, constructed from durable nylon for rough conditions in the backwoods and built with adjustability in mind. Loosen the expanding horizontal gussets for an additional 15-20L of cargo capacity on longer backpacking trips, or cinch it tight for smaller, compact loads on fast summit days. Plus, ample quick-stash solutions on the straps, sides and bucket lid ensure there are plenty of places to store your mid- trail essentials. However, you pack it, the Y-Flex suspension adds support so this lightweight backpacking backpack can hit well above its weight class.

Flex Capacitor Rain Cover sold separately.

FEATURES

  • Lightweight Y-Flex Suspension provides superior increased support.
  • 20L adjustable volume to tailor both to extended backpacking trips or shorter day trips.
  • Hydration sleeve doubles as removable summit sack.
  • Dual adjusting shoulder straps tailors pack fit to your torso.
  • 2 hydration pockets on shoulder straps.
  • 2 stretch mesh side pockets to keep essentials close at hand .
  • Zippered hip belt pockets for easy storage.
  • U-shaped top access zipper for easy access while backpacking.
  • Lightweight backpack.

MATERIALS

  • 100D Nylon Honeycomb/420D Oxford

TECH SPEC

S/M Torso
  • Capacity: 40-60L
  • Weight: 1.23 kg
  • Torso Fit: 41 - 48 cm
  • Hip Fit with S/M waist belt: 71-117 CM
  • Dimensions (H x W x D): 63 x 20 x 32 cm
  • Suspension: Lightweight Y-Flex

M/L Torso

  • Capacity: 40-60L
  • Weight: 1.4 kg
  • Torso Fit: 46 - 53 cm
  • Hip Fit with M/L waist belt: 84-127
  • Dimensions (H x W x D): 70 x 22 x 32 cm
  • Suspension: Lightweight Y-Flex
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79894273372

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cbvhdoc
Chelsea, US
★★★★★ 4
Does the job
Size: 53" x 48", Style: Starter Wall
Decent look, basic unit. Wasn’t the easiest build, I had to trim panels to get a good fit. Great price, but quality matches that point.
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Reviewed in the United States on January 30, 2024
A
Verified Purchase
As expected
Boise, US
★★★★★ 5
Excellent
Size: 70" x 48", Style: Starter Wall
Easy to assemble
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Reviewed in the United States on June 24, 2025
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Andrew B
Dallas, US
★★★★★ 5
High Quality
Number of Items: 6, Color: Black (6-pairs), Size: Large
High quality and fit great
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Reviewed in the United States on May 28, 2026
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Peter
Bozeman, US
★★★★★ 5
Great socks, watch out for bad seller
Number of Items: 6, Color: Black (6-pairs), Size: Medium
The socks are great, comfy, padded where you want it. I used these for work socks; I have a blend of corporate desk life and maintenance work. I like the low cut so my shoes don't rub the back of my ankle but not so high that socks always fall down. Great for running and sports as well. Been using these for years. Buyer beware though of the particular seller Liegnitz Group: They were late shipping, sent me the wrong socks so I sent for a return and they send me the right ones. My return got delivered back to them but they did not process it and did not send out any new ones. They cancelled my order and acted like I got the right ones all along. Buy from a different retailer.
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Reviewed in the United States on November 8, 2024
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Verified Purchase
Terry Hale
Cuba, US
★★★★★ 5
Comfortable with perfect fit
Number of Items: 6, Color: White (6-pairs), Size: Medium
I have had these socks for a few weeks now and wear them when running. I have small feet at a men's size 7 and they fit perfectly. Most men's socks are to big for my feet. They are pretty thin but well made and have good cushion. I recommend these for anyone that likes ankle socks for athletic activities.
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Reviewed in the United States on March 19, 2024

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