31 ( w ) x 10 ( d ) x 44.5 ( h ) polyester Keep your belongings safe and make your commute all that more comfortable with our latest generation Bobby anti-theft backpack and briefcase. Itâ€™s made out of high-quality polyester and has reflective prints for your night's safety. There are padded compartments for a 15.6â€ laptop, tablet up to 10â€, and all your other gear on the inside. The built-in metal frame keeps your belongings safe and your backpack in shape. Easily switch from backpack to briefcase carrying. Quickly lock your bag to any fixed object with the integrated zinc alloy lock in the right strap. Including luggage strap. Registered design® "Your Benefits â€¢ cut-proof material â€¢ hidden zipper closures â€¢ reflective safety strips â€¢ water-repellent â€¢ integrated USB charging port"