Fidlock Twist Large Essential Bag with Bike Base is the perfect accessory for your bike. The bag has an outer compartment that can be locked to secure your belongings while you are riding or commuting. It also comes with a stowable and size adjustable shoulder strap, so you can wear it over one shoulder like a messenger bag or across your chest like a backpack. This bag features additional compartments inside and outside, key hooks for optimal organization, and optimized design for the frame triangle. Its Fidlock closure allows you to open and close the bag with one hand while keeping it closed when not in use.