The Notebook Porter currently comes in two sizes that fit laptops with a 14.1" - 17" size screen. One size allows the use to place their laptop in a briefcase style case (landscape) (The Briefcase Fit) and the other orientation allows the laptop to be placed lengthwise (portrait) into a backpack or carry-on (Carry-On Fit). A shoulder strap and accessory tote to carry power cords, mouse, flash drives, etc. are also available. The Notebook Porter works with any travel case due to its slim profile. This product provides the ultimate in flexibility so that professionals and students alike can utilize different carrying bags, backpacks and travel cases with this product.