ThinkPad X Series notebooks put the ultra in ultraportable. They're designed for on-the-go professionals who need maximum portability and light weight. And there's no trade-off in usability or durability. The latest breakthrough - the amazing ThinkPad X300 - combines an ultra-thin DVD burner, Solid State storage and next-generation ThinkPad "roll cage" technology to create the thinnest, lightest full-featured notebook in the 13" widescreen class. And it's the "greenest" ThinkPad ever.