VASOLA Urban Commuter Convertible Tote Pannier Backpack is casual and convenient for laptop users and bike commuters. The inside compartments contain a 15" mac book pro laptop pocket and a 9" iPad tablet PC pocket with well-padded protection. The main materials are nice-touch and light two-tone polyester with water-resistant, durable cotton webbing for the adjustable shoulder and chest straps, and there is also a front light holder with the VASOLA logo embossed. Hidden main zipper compartment and front zipper compartment are designed to avoid water during rainy day. More packets are available for the books, smart phone, pens, bottles and personal belongings. There are three usages for the convertible bag: hand carry, tote bag, and backpack. Carrying a VASOLA Tote Pannier Backpack when commuting to work or leisure improves mobility and simplifies your life!