Lululemon City Adventurer 20L Black Backpack with silver hardware. Carried only once. Smoke free home. Lululemon City Adventurer Backpack 20L City adventurers, we see you. This backpack has a discreet, exterior water bottle pocket for quick access to hydration as you jet from work to workout. Reintorced strap construction carries a heavy load when you're on the go all day Expandable pocket for your sweaty gear Exterior padded pocket fits a 16" laptop Trolley-compatible sleeve Interior pockets hold the essentials Dimensions: 29cm x 18cm x 41cm (11.4" × 7.1" x 16.1") Volume: 20L