The Series 2 Large is the larger version of the medium and it can carry up to a 17” laptop and enough clothes for a 3-4 night trip.The Series 2 Large is the larger version of the medium and it can carry up to a 17” laptop and enough clothes for a 3-4 night trip. Key Everyday Features: Easy-access, padded side-zip computer pocket for up to 17" laptops Spacious main compartment with organization pockets, fleece-lined tablet pocket and removable key leash Hidden, zip-away side water bottle pocket Zip tuck-away back storage pocket for shoulder straps Side handle for easy carry Black metal Knack logo hardware Key Travel Features: Separate, patent-pending, expandable packing compartment holds 3 to 4 changes of clothes Meets most global airlines' carry-on dimensions even when expanded Packing compartment with easy-access suitcase lid Hidden trolley sleeve slips over wheeled luggage handles Removable waist straps for carrying heavy loads comfortably Key Technical Features: Custom-developed, durable, water-resistant body fabric Molded, comfort-cool foam back panel YKK™ water-resistant zipper with custom-designed pullers KNACK Series 2 Large Expandable Backpack Midnight Black