Built for 70. 3 and full-distance racing, Castelli's Sanremo Ultra Speedsuit provides long-lasting comfort and superior aerodynamics. Its main body fabric provides a snug fit and moisture management, while the rear Velocity mesh keeps things breathable while blocking our 94% of harmful UV rays. The Sanremo front opening is designed for easy forward bend and easy ventilation, while the KISS Tri seat pad keeps us comfortable on the bike.