Brooks Cambium C17 Saddle. The Brooks Cambium C17 represents a more modern take on the high performance saddle, but rest assured the comfort, durability, and craftsmanship that has made Brooks a legend amongst saddle companies is very much still evident. Its signature cover is 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, and waterproof top is designed to follow the rider's movements for immediate comfort and ease of use. The Cambium C17 is a saddle you can really settle into as its geometry and dimensions are based closely on that of Brooks's most recognizable model, the B17, ensuring the same timeless comfort mile after mile. And there's no mistaking that this is a Brooks saddle as the cover features the venerable company's distinct rivets at the fore and aft.