The release of the ThinkPad X300 set a new standard in Ultrabook engineering and introduced the now familiar carbon fibre design.

Many of the characteristics that would later define the X1 Carbon were introduced with the X300, such as its carbon fibre top cover. ThinkPad engineers realised this was the ideal material to meet the target of creating a laptop less than 20mm thick and 3Lbs in weight. This unique blend of ultra-thin design, enterprise system support and features such as WWAN received critical acclaim, with BusinessWeek calling it, ‘The Perfect Laptop’