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. A saddle you can really settle into, the geometry and dimensions are based closely on that of our most recognizable model, the B17, ensuring the same timeless comfort mile after mile.