Sierra Designs
Sierra Designs Flex Capacitor 60-80 L Backpacks Peat Medium/Large
Updated Jun 17, 2026
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About this product
Sierra Designs Flex Capacitor 60-80 L Backpacks Peat Medium/Large.
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.
Specifications
- Size:
- 18 - 21 in
- Weight:
- 3.11 lb
- Capacity:
- 60 - 80 liters
- Volume:
- 3661 - 4882 cubic in
- Height:
- 27.5 in
- Depth/Thickness:
- 12 in
- Width:
- 8.5 in
Features
- Sierra Designs 60-80L Flex Capacitor Backpack Sierra Designs 80710123PT-M/L: Flex Capacitor 60-80 L Backpacks Peat Medium/Large
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