The MacBook Air is a Macintosh notebook computer produced by Apple Inc. It is part of the MacBook family and features an optional solid-state hard drive. Apple CEO Steve Jobs revealed the MacBook Air at the Macworld Conference & Expo on January 15, 2008. It is 0.76 inches (1.93 cm) thick at its thickest point and 0.16 inches (0.4 cm) at its thinnest. Weighing 3.0 pounds (1.36 kg), it is Apple’s thinnest and lightest laptop.