Sierra Designs Flex Capacitor 40-60 backpack review

A backpacker hiking the Dawson Pass Trail above Pitamakan Pass in Glacier National Park.

The Best Ultralight Backpacks of 2024

By Michael Lanza

Do you need an ultralight backpack? Many backpackers might answer “no” when, for many reasons, their answer should logically be “yes.” These packs aren’t just for thru-hikers. Typically weighing roughly between under two pounds and three pounds empty, ultralight packs have support for carrying 25 to 35 pounds—making them ideal for more than just ultralight backpacking. For many backpackers, that represents the range of pack weight they either carry on most trips—or could carry on most trips, with smart packing and reasonably light gear.

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The Sierra Designs Flex Capacitor backpack.

Review: Sierra Designs Flex Capacitor 40-60 Backpack

BackpackSierra Designs Flex Capacitor 40-60$200, 2 lbs. 9 oz. (men’s S/M pack with S/M hipbelt)Sizes: men’s S/M (fits torsos 16-19 inches) and M/L (fits torsos 18-21 inches), plus four hipbelt sizes (XS/S to L/XL)backcountry.com Many avid backpackers eventually find themselves facing an expensive quandary: the need for a second or even third pack to better handle the range of trips …

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