The cambium c17 carved saddle from brooks is made from the same vulcanized natural rubber and organic cotton canvas as the c17 but with an added cut out section to the top which alleviates pressure in the perineal region experienced by some long distance cyclists supporting comfort on longer rides the additional flexibility absorbs bumps and vibrations from the road functioning much in the way of a shock absorbing seat post the vulcanised natural rubber and organic cotton canvas is enhance