Introducing the Brooks Challenge Tool Bag Large. With owning the Challenge Tool Bag you allow yourself to be able to mount your tools wherever is best, be it be on your handle bars or on the back of your saddle. Having this option means you are able to mount certain other objects to your bike without having to compromise one for the other. The Challenge features buckles that are located in the bag itself for extra security while the strap that makes the closure wraps fully around the tool bag ensuring that the contents do not rattle about whilst riding. The design idea of this bag is near to its older brother, which was designed and patented in 1896, the only difference being that the new challenge is 3 times larger. This is ideal for the long distance rider that needs to take out more than just a multi tool and some tyre levers. With a choice of colours you are sure to find one that suits your bike.