Challenge Tool Bag A compact and handy way to carry the essential emergeny tools on your bike. The Challenge Tool Bag is designed to fix to the rear of any Brooks saddle that has the bag loops on it, which is almost all of them. Intended to hold the essentials in the same manner of quality, durability and style that you are used to from your Brooks saddle, the Challenge is a small bicycle seat pack that will hold a spare tube, tyre levers and a compact multi-tool, getting you out of trouble when you need it most. This design can be traced back to Brooks' 1896 catalogue, which sums up the brand, as they stick to a traditional sense of style and quality, keeping the designs that are popular and work well and discarding the ones that don't. We reckon the Challenge Tool Bag will be in the Brooks inventory for a many years to come!