Used, excellent condition. Like new. Knack small Series:1 backpack in Stealth Black. Pack Dimensions (LxWxD): Unexpanded: 17" x 12" x 5" Expanded: 17" x 12" x 9" Volume: Unexpanded: 15 Liters Expanded: 27 Liters Weight: 2 pounds 4 ounces Laptop Pocket Dimensions (LxWxD): Pocket Opening: 13" Dimensions: 14" x 10" x 2" (fits 13” laptop) Back Panel Material: Molded, comfort-cool foam back panel Everyday Features: Spacious main compartment with lockable zippers Protective, fleece-lined internal tablet pocket 2 interior, see-through, soft monofilament mesh zip organization pockets Handy removable interior key leash Built-in, fleece-lined, protective soft case sunglasses pocket Easy-access, front triangle pocket with RFID-blocking lining, business card pockets and passport pocket Exterior charger and battery pocket with pen loops Zip-away side water bottle pocket holds 17 oz S'well™/18 oz Hydro Flask™ bottles Padded, side computer pocket fits up to 13" laptops (measured diagonally) Ergonomically-designed comfort foam shoulder straps with easy-release clips Elastic keepers for shoulder strap Travel Features: Separate, patent-pending, expandable 12 cubic liter packing compartment with easy-access suitcase lid opening Hidden trolley sleeve slips over wheeled luggage handles Lockable zippers on travel compartment Internal packing compression system Large, see-through, soft monofilament mesh zip packing pocket Tuck-away back storage pocket for shoulder straps