Fizik Antares R3 Open Saddle - Kium, Black, Regular

Antares is designed for Chameleon style riders who have a medium spine. Riding involves easy transitions from standing or sitting.
R3 fiberglass composite shell with Wing Flex
K:ium Rail: special alloy with a high strength-to-weight ratio and excellent vibration damping; 8% weight reduction compared to solid titanium