Brand new Lululemon Pack and Go Backpack Black. Stow away back harness to convert into a shoulder bag with detachable straps Adjustable straps Exterior water bottle pocket for quick access to hydration Zippered pocket has an interior sleeve to keep your device safe and secure Interior pockets hold the essentials Trolley-compatible sleeve Water-repellent Easy to wipe clean Dimensions: 28.5cm x 14cm x 41.5cm (11.2" x 5.5" x 16.3") Volume: 21L