Business luggage can be transported by carrying it with handles, using shoulder straps, or by rolling (if the piece has wheels). The larger the bag and heavier the content, the less hand-carrying is utilized, which is why manufacturers are including more robust shoulder straps and smooth inline skate wheels. Computers are an absolute necessity, which is why business luggage has dedicated compartments for laptops, notebooks and netbooks, as well as the power cords, thumbdrives and cables needed to get work done while on the road, in the air or over the rails.