Thule Paramount Commuter Backpack 27L (Black)Thule Paramount 27L commuter backpack ensures comfort, convenience and safety on your bike commutes. A commuter backpack for every bike commute The bag's expandable front pocket is perfect for a bike helmet or shoes and a bike lock, while the side pocket help you quickly reach your phone while on the go. The backpack provides maximum comfort when riding, thanks to the shoulder strap shape and sternum strap position which compliments the natural bike