SKU: 425046704

Sierra Designs Flex Capacitor 40L-60L Backpack Bag - M/L - Majolica Blue

Sale price$429.75 Regular price$477.50
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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

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Description

Sierra Designs Flex Capacitor 40L-60L Backpack Bag - M/L - Majolica BlueThe Sierra Designs Flex Capacitor 40L 60L Backpack Bag M L Majolica Blue offers a versatile and high performance solution designed for multi day hiking and backpacking escapades. Created by Sierra Designs, this backpack boasts a unique expandable capacity, allowing seamless adjustment between 40 litres for lighter loads and approximately 60 litres for full expedition gear. Crafted from a blend of durable yet lightweight materials, this backpack is

The Sierra Designs Flex Capacitor 40L-60L Backpack Bag - M/L - Majolica Blue offers a versatile and high-performance solution designed for multi-day hiking and backpacking escapades. Created by Sierra Designs, this backpack boasts a unique expandable capacity, allowing seamless adjustment between 40 litres for lighter loads and approximately 60 litres for full expedition gear.

Crafted from a blend of durable yet lightweight materials, this backpack is ideal for the challenging outdoor environments of the UK and Europe, where adaptability and performance are key.

For enthusiasts of outdoor activities and readiness, the Sierra Designs Flex Capacitor backpack stands out as a top-tier selection. Whether you're gearing up for backpacking adventures, setting up field equipment, planning extended camping trips, or preparing for outdoor excursions, its variable size makes it a versatile choice for a range of scenarios. Its robust build ensures longevity across various landscapes.

While the backpack can expand up to approximately 60 litres, those embarking on extensive journeys may require larger compartments or alternative access features based on their specific gear needs. Additionally, as a top-loading design, accessing items at the bottom may require unloading some contents.

For customers in the UK and Europe, it's essential to ensure the waist belt fit and torso length for optimal comfort. Prior to purchasing, it's recommended to measure your torso length and match it with the provided S/M size specifications.

Specifications:

  • Adjustable volume: 40L to 60L through a gusset and strap system
  • Sturdy frame: Lightweight Y-shaped aluminium support
  • Premium materials: Main body in 100D nylon honeycomb with a reinforced 420D Oxford nylon base
  • Convenient external access & storage: Multiple pockets for easy accessibility
  • Comfortable suspension & ventilation: Padded hip belt and shoulder pads
  • Size S/M: Torso length 41-48 cm, Waist size 73-81 cm
  • Colour: Majolica Blue
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: 425046704

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4.6 ★★★★★
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Grma4m&m
Waukegan, US
★★★★★ 5
They’re fantastic!!!!
Size: X-Large, Color: Multicoloured E-(5-pack)
My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly. The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.
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Reviewed in the United States on April 25, 2026
S
Verified Purchase
Siobhan Smith
Draper, US
★★★★★ 5
Super soft and comfortable!
I haven't bought new underwear in forever. I used to wear thongs, but now find them incredibly uncomfortable. The last few times I've tried to buy new underwear, the sizing was either way off (I'm a medium, but gave up after having to return them for a large and then extra large) or the quality was horrible (two brands stretch waaaay out and they can fall down while wearing them (I have larger ass-ets, so they shouldn't start to slide down during use). I tried these after buying some bamboo pyjamas and I love them! They are incredibly soft, comfortable, and stretchy. I can use them all day, and they work well, whether I'm lounging on the couch or wearing them under my spandex shorts at the gym, they don't ride up or slide down. They are both comfortable and look sexy, while providing support in all the right places. I haven't had them too long, so I can't speak on the durability, but they appear to be of good quality and I plan to order more, this time without the band.
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Reviewed in the United States on November 13, 2025
M
Verified Purchase
Mariel
Battle Creek, US
★★★★★ 5
Well made, light fabric. Waist doesn't roll.
These bamboo underwear really do keep you cool. They fit true to size, and wear easily. the wide elastic waist band doesn't roll on me. They are comfortable to wear, washed and dried easily. The material has some stretch to it, but not a lot. Well made, no stray strings. Perfect fit for me. Just what I was looking for.
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Reviewed in the United States on May 17, 2026
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Verified Purchase
Finngirl
Los Angeles, US
★★★★★ 5
Good quality, smooth feel
I got these briefs so recently that have washed just one pair so far. First off, these are very comfortable, the material is soft & bordering silky, good quality sewing. Wash well and minimal if any shrinkage. They do come a bit wrinkled from the dryer but hey, these are underwear and will go on smoothly. If it were a t-shirt, I would look sloppy. I feel the sizing is accurate. No rolling and these don't announce themselves under clothing. Planning on getting more of these boxers and replacing my old panties.
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Reviewed in the United States on January 31, 2026
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Verified Purchase
Skurtzo
Waukegan, US
★★★★★ 4
A little snug on the thighs
Size: Medium, Color: Multicoloured G (5-pack)
Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
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Reviewed in the United States on August 29, 2025

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