When we're trekking into the backcountry, the Sirrus 36L Backpack lets us carry everything we need for long, demanding hikes. Its women-specific fit means it's designed for our natural shape, reducing uncomfortable friction on our hips and waist. The ErgoPull waistbelt closure makes cinching down the belt a breeze, and its hip-belt pockets hold our smartphone, sunnies, or quick snacks to keep our spirits high.