The MacBook Air, made for thinness, weighs , was the first MacBook produced using a single piece of aluminum with Apple's unibody technique. The computer has a glossy LED backlit screen and a backlit keyboard, as well as a large trackpad that responds to iPhone-like Multi-Touch gestures such as pinching, swiping, and rotating. With the release of Mac OS X Snow Leopard, the Air's multi-touch trackpad also supports handwriting recognition of Chinese characters.