18 Flex-File Hardside Double-Spinner Laptop Carry-On Navy. Fashion, style, durability and function are the hallmarks of business travel and exactly what we have built in to our new Flex-File Tech collection of business travel cases. Constructed of 1,680 denier ballistic polyester material, not only can you store your laptop/tablet safely, but also your files will be well organized in our patented, detachable Flex-File file system. Go with style. Go with