Look: The LOOK S-Track LT Composite Cage is easy to fit and compatible with all Mountain/Enduro/XC and Touring bikes. Constructed from a composite material which is adaptable to all the S-Track range. The main draw of using the Composite Cage is the increased surface area which improves the amount of control available to the rider. Its non-slip and confidence enhancing design is a joy to look at, as well as use and at only 74g per pair, they're not going to add unnecessary baggage to your bike.