Now a days every consumer durable product is getting slimmer and lighter. And same in the case of laptops. Now a days Ultrabooks are manufactured by companies. Ultrabooks are lighter, Slimmer, thin and high performance as compared to laptops . Ultrabooks are the combinations of the netbooks and laptops. It means in comparison of weight, portability and battery backup it is like netbooks. And in comparison of performance it is like the laptops. It is not enough to say it is a combination of netbook and laptop.