Mobile Office offers Perfect Fit, SmartSleeve and special wheels for easy traveling. Four multidirectional, spinner wheels allow 360-degree upright rolling in multiple directions so there is no weight on your arm. SmartSleeve slides over upright handles of your luggage for easy mobility. Perfect Fit adjustable laptop system provides a custom fit for various size laptops from 13" to 15.6". Two easy-access pockets on front panel includes one with brushed poly for Smartphones and one secure zipped pocket for valuables. Xenon 2 Perfect Fit Mobile Office also offers Tablet/iPad pockets with brushed poly lining, neoprene organizer pocket, ballistic nylon construction and black nickel hardware for durability and style.