The Mac Book Air is proof. Its designed around all-flash storage for better responsiveness & reliability. It features a trackpad with full multi-touch support. & though its incredibly thin & light, its large battery gives you portable power. Chief among it was the precision unibody enclosure. That same engineering process comes to the Mac Book Air display. Just like the main enclosure, the display housing is crafted from a single piece of aluminium, with all the structural elements machined directly into it. Total unibody construction means a less complex design with fewer parts. That makes Mac Book Air exceptionally thin & light, yet still durable enough to handle the rigors of everyday use.