Fizik antares r1 carbon saddlethe antares r1 is ideal for cyclists with medium spine flexibility the antares shape is purposely made wider than the arione range and includes a slightly curved profile which is more forgiving lightweight and strongthis antares r1 features improved weight distribution and a host of fizik technologies like the carbon double shell and braided carbon rail for the optimum blend of strength and support the wing flex permits flexibility where your thighs meet the sadd