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Born in California and bred on the trail, Sierra Designs has created outdoor equipment and apparel driven by function & designed to keep you happy since 1965. We believe outdoor adventures should be within reach for everyone. That means planning your days around the pull of exploration. It means celebrating your moments listening to campfire crackles and staring at limitless sky. It means getting a little beyond your comfort zone and never settling for ordinary. We create innovative, attainable, functional gear that we stand behind to allow you to Think Outside - because life is found in the adventure, not in the destination.
Adjustable Volume
Flex Suspension
Extra Storage
Ultra-Lightweight
Flex Capactior
Meet the pack that does it all. The Flex Capacitor family of packs feature adjustable volume to handle both short and long hauls, and a Y flex suspension system that carries above their weight class. With three sizes in a 25-40, 40-60, and 60-70 L capacity, there is a flex pack to fit your needs.