Shopping Cart

Sierra Designs Flex Capacitor 25-40L Backpack

Product Video

See all products from Sierra Designs

Regular price Was: $179.99 Now: Sale price $89.99

Leaves our warehouse in 2 business days.

size Small/Medium

Price Match Guarantee »

gift icon Know that you're getting the best price when you shop with us. We match the prices of our online competitors.

No Sweat Returns »

gift icon Shop with the confidence that if you're not happy with your purchase you can return it. We make returns flexible and easy.

Get some extra space when you’re loading up your Sierra Designs Flex Capacitor 25-40 liter Backpack—loosen the gusseted sides to expand the pack and give yourself an additional 15 liters! Made with an ultra-lightweight design with plenty of space to go with all the gear you’ll need on your adventure, the Flex Capacitor 25-40 is just the thing. Featuring a zippered sleeping bag compartment, a removable raincover, side hipbelt pockets, and Y-Flex suspension which makes this great Backpack is amazingly comfortable to carry. With plenty of pockets for easy access and ample storage, the Flex Capacitor 25-40 is perfect for your adventure!


  • Material: 100D Nylon-Poly Ripstop/420D Nylon Oxford
  • 25-40L Expandable Volume Backpack
  • U-Shaped Top Access Zipper
  • Zippered Hip Belt Pockets
  • 2 Stretch Mesh Side Pockets
  • 2 Stretch Mesh Hydration Pockets on Shoulders
  • Small Stash Pocket in Lid
  • Ultra-Lightweight
  • Lightweight 'Y' Flex DAC Suspension
  • Capacity: 25-40L (1525-2440 cu in)
  • Weight with S/M Waist Belt: 2lbs 7oz
  • Weight with M/L Waist Belt: 2lbs 8oz
  • Torso Fit: 16" - 19"
  • Hip Fit with S/M Waist Belt: 29" - 32"
  • Hip Fit with M/L Waist Belt: 32" - 35"
  • Lifetime Warranty
  • Dimensions: 23"H x 11"W x 8.5"D

Customer Reviews

No reviews yet