Fizik designed the Tritone 5. 5 Carbon Braided Rails Saddle to strike the perfect balance between maximum aerodynamic performance and extended riding comfort. Fizik accomplishes this through the saddle's strategically varied foam density and an indentation that increases toward the blunt nose. The Tritone's shape keeps the pressure on your sit bones, even when you're draped over the bars. For the shell, Fizik uses nylon reinforced with carbon fiber, making it lightweight and stiff. The shell is covered with a Thermo welded Microtex that provides a waterproof and airtight seal. The Tritone 5. 5 also features a Front Transition Hook, and the carriage kit off the back allows you to easily attach two bottle cages, CO2, an inflator device, and a spare tube. With an extended saddle length of 24cm, the Tritone is compliant with UCI rules.