Review: Sierra Designs Flex Capacitor Backpack

The Sierra Designs Flex Capacitor is a lightweight, full-suspension backpack that is expandable from 40 liters to 60 liters using a unique, patent-pending gusset system. I’m 5’9” and 155lbs. The medium size fits me perfectly. The backpack features a top-lid zipper for easy access into the main compartment, a top lid pocket, two mesh side pockets, … Continue reading Review: Sierra Designs Flex Capacitor Backpack