Like its namesake, the Parker is flexible and able to take on the city on the fly. Super durable outer construction keeps your laptop and change of clothes dry for your every day ride into work, or it expands for those short notice weekend trips with friends. The tricot lined outer pocket is perfect for quick access to your phone, and the key keeper in the magnetic pocket will help keep you organized. Reflective mesh panel on the bottom is great at keeping you seen while you swing through the city on your bike or hop off the bus on vacation. Adjustable and removable sternum and waist straps keep you stabilized so you can save the city one day at a time.