Thule 5481 Shield Backpack 23L With InLock, Mid Blue

 Versatile carrying capacity 23L convertible backpack that carries cargo comfortably on your bike or on your back   Effortless attachment For use with the Thule InLock universal panel (not included) which attaches easily to almost any bike rack. Thule InLock universal panel purchased separately   Waterproof protection IPX4 waterproof rating with sealed zipper, welded seams, and durable, waterproof materials   Comfortable carry Hardware-free design makes it comfortable to carry off the bike, and the backpack straps stow easily in back pocket while riding and can be deployed effortlessly when needed   Secure laptop storage Padded compartment protects laptops up to 16"   Enhanced visibility Reflective trim enhances visibility from the side, front, and back when cycling   Quick-access storage Water-resistant exterior pocket keeps essential items easy to reach   Smooth and silent ride Soft connection of InLock system ensures a rattle-free ride