This is a great rolling backpack from the California Pak International Incorporated. It is their Rickster bag. It is made of nylon. The dimension is 20 by 14 by 9, 2520 cubic inch.
A padded laptop compartment.
Side zipper for easy access to the laptop. Padded wheel cover for backpack conversion.
Side zippered Pockets.
Front accessory zippered pocket.
Self-repairing the Excel zippers.
Top handle for Easy Transport.
Retractable single pole push button handle system.