Constructed with high-quality ballistic nylon, the Liberator is not only very durable, but extremely versatile. A four-way portability system allows the Liberator to be carried by its easy grip handle, padded shoulder strap, hideaway backpack straps, or the new luggage strap that fits over the handle of a wheeled suitcase. An expandable section adds more than 420 cubic inches of storage space to an already roomy 1,020 cubic inches of standard storage area -- a full 40 percent increase in internal volume. And, because the Liberator does not look like a typical computer case, it is less likely to attract laptop thieves.