As much speed and comfort as you can get in a traditional sleeveless tri top.Features:- Freedom of movement in the water, aerodynamics on the bike, comfort on the run- Velocity Rev2 aero fabric on front-facing surfaces- UPF 16 Velocity mesh back blocks 94% of UV rays, with generous breathability- 2 rear pockets lie flat and prevent nutrition from bouncing around- GIRO3 flat gripper elastic lies flat on lower back- SnapLock fastener at lower back to clip to Free Tri Short to prevent top from riding up during swim or bike leg- YKK® Camlock® zipperSpecifications:- Weight: 107 g- Fit: RaceTechnology:Rosso Corsa:- Our Rosso Corsa label is only applied to the highest-level products we make. Every thread and fiber, every curve and contour is obsessed about. Rosso Corsa represents a categorical breakthrough in cycling innovation and the meticulous craftsmanship you expect from Castelli's performance-enhancing apparel.