The 00 designation is a special badge reserved for the best Fi'zi:k products. The Antares is one of three Mens Road Saddle shapes in Fi'zi:k's Spine Conceptâ„¢ range. The Antares shape is wide and slightly curved. The Antares 00 is the top-of-the-line saddle available in this shape. It features a high-modulus carbon shell with Wing Flexâ„¢ and Mobiusâ„¢ carbon braided rail, making it the lightest and stiffest Antares model. Despite its low weight, the 00 foam compound ensures comfort is not compromised. The Antares 00 is designed for The Chameleon: Medium Spine. If you have an intermediate degree of spinal flexibility, you are considered a chameleon. The Antares shape, with its increased width and slight curvature, will benefit you. Key Features:- Shell: High Modulus 00 Carbon, Wing Flexâ„¢ for freedom of thigh movement- Rail: Mobiusâ„¢ Carbon Braided 7x9mm- Integrated Clip System: No- Length: 275mm- Width: 142mm- Weight: 140g Please note that the product title 'Antares 00' and the brand 'Fi'zi:k' are not mentioned within the text.