Sidi wire carbon air womens road spd sl shoes known for their quality comfort and fit sidi shoes are loved by cyclists the world over designed specifically for the shape of womens feet with a vent carbon sole and improved techno 3 closure system the wire carbon air is light and stiff and suitable for racers and enthusiasts alike the womens specific fit is slightly tapered to suit a more tapered foot shape the shoe is narrower across the ball of the foot and there is less volume in the