In 2008, Apple started selling the MacBook Air, notable for being thin and light. In introducing the device, Jobs stuffed one into a standard-sized manila office envelope. Apple pulled this off by eliminating the CD drive and the wired Ethernet port, figuring that people could download files from the Internet over Wi-Fi. Later Airs and MacBook Pros would stay thin and light by also ditching the traditional, spinning hard drive in favor of solid-state memory, the kind used in phones and tablets.