Sierra Designs

Flex Capacitor 40-60 Backpack with Waist Belt

Colour: Birch

Versatile pack with expanding capacity for overnight or multi-day trips

This lightweight, versatile pack has 20 litres of adjustable volume, giving you the option of packing 40l or 60l, making it the perfect pack for overnight camps or multi-day trips. The lightweight Y flex suspension system means you’ll barely feel your load and there are plenty of clever pockets including a stash pocket in the lid, two stretch mesh side pockets and zippered hip belt pockets so you can keep your kit organised, whatever the adventure. It’s even got two stretch mesh hydration pockets on the shoulder straps so you don’t even have to put your pack down to grab a drink.

    • Expandable volume for versatility in use
    • 2 hyrdation pockets on shoulder straps
    • 2 stretch mesh side pockets
    • Zippered hipbelt pockets
    • Ultra lightweight
    • U-shaped top access zipper
    • Lightweight Y Flex DAC Suspension
  •   S/M Torso M/L Torso
    Capacity 39-56 L 41-60 L
    Weight with S/M waist belt 1.16 kg 1.16 kg
    Weight with M/L waist belt 1.19 kg 1.19 kg
    Torso Fit 40.6 - 48.3 cm 45.7 - 53.3 cm
    Hip Fit with S/M waist belt 73.7 - 81.3 cm 73.7 - 81.3 cm
    Hip Fit with M/L waist belt 81.3 - 88.9 cm 81.3 - 88.9 cm
    Dimensions 70 x 28 x 25.4 cm 70 x 28 x 25.4 cm
    Suspension Y Flex DAC Y Flex DAC
  • If you’re 175 cm tall or shorter choose the S/M size

    If you’re taller than 175 cm, you’ll want the M/L size

    Waist Belt sizing

    • S/M: Up to 33” waist (83.8 cm)
    • M/L: Up to 40” waist (101.6 cm)
    • 100D Nylon-Poly Ripstop/420D Nylon Oxford
    • Internal Frame: Aluminium
  • Maybe it’s no wonder that the state of California has been the cradle for so many great American outdoor brands. Sandwiched between the Pacific Ocean and the Sierra Nevada mountains, and encompassing no less than nine US National Parks, the Golden State has long been a mecca for outdoor adventurers of every ilk. Sierra Designs is a case in point. California was the natural place for the brand’s co-founders, a pair of young outdoor aficionados named George Marks and Bob Swanson, to set up shop.

    They first met in late 1963 at while working at The Ski Hut in Berkeley, CA. Two years later, Sierra Designs was born. Today, the brand continues to create outdoor equipment and apparel that is functional, beautiful, and most importantly, attainable, enabling outdoor lovers throughout the USA and beyond to hit the trail and fill their souls with a sense of wanderlust.

Great fit. Super efficient packing and unpacking. Very light.

-Andy H, Verified Buyer


Free UK Shipping £30+

Simple & Free Returns

Brilliant Customer Service

Don't Miss