Thank you for viewing. This is a highback specifically for the C14, which was the top-of-the-line model at the time, made of lightweight and rigid carbon fiber. It came attached to a size S binding, but the mounting area was also the largest size, so I think it can also be attached to M to L size bindings. There is no stickiness from aging, and I think it can be used normally. Mounting parts are also included as a bonus. I am also listing other binding parts, so combined shipping is possible. Please take advantage of this. ★The price has been adjusted to include shipping of 750 yen. Ships the same day.