Brooks Cambium is a range of saddles made from vulcanized natural rubber and organic cotton enhanced by a thin layer of structural textile for added resilience and legendary Brooks longevity. The uniquely flexible, maintenance-free, waterproof top is designed to follow the rider's movements for immediate comfort and ease of use. To the eye, the C17 may appear quite racy in its shape and lines, which indeed it is. The C17s is slightly shorter than the C17 and more suited to the female anatomy.