Mensahero is messenger. This size fits a 15″ laptop and legal documents. This bag is configured for a biking to office routine. The large thick hood is secured by two quick release locks to prevent it from flapping around as you speed up. Protected under this flap/hood is a large zipped external pocket for quick access essentials. The top zipper further secures the main content. Lined with waterproof fabric, it has multiple pockets for most basic office gears and a keyhook. The entire load is balanced by 2 D-ring configurations which allow the transfer of strap to a preferred comfortable fit for a stable bike ride.