This is 43 Liter Bag made with high quality ripstop polyester fabric and lined with nylon ripstop lining. This bag is available in black color only and is water resistant but also comes with a free Rain cover. Bag's main interior can be accesed though main zipper which allow it to open 180 degree and help users to organize comfortably. Bag can support 17" laptops very easily and padded from all sides give maximum protection to your fragile equipment inside. Please check the Difference corner which makes very clear the differ from pro version.