From the Website:
System76 provides and supports Ubuntu pre-installed laptops, desktops, and servers with a commitment to the ideals of open source software. System76 enables consumers, businesses, schools, and governments to easily transition to the world of open source software through world class hardware, software, and support.
Named Lemur UltraThin, the laptop features an Intel Core i3-330UM Processor, 13.3" monitor, Intel HD Graphics (GMA 5700MHD) and weighs only 3.4 lbs. The laptop is priced competitively at $729.00.
More details here