Lewis N. Clark 18 Inch Wheeled Overnighter, Black, One Size Large main compartment opens vertically and includes side stays for easy access and packing Includes padded internal sleeve that fits most laptops up to 15 inches and large enough carry files Locking handle trolley system with easy push-button release and two heights Four-wheel caster system provides stable 360 degree upright maneuverability Size: 18in x 13in x 10in 1628 cu. In.