Castelli Free Tri ITU Suit

For Olympic to Ironman
This suit complies with ITU regulations but has been optimized in terms of materials, aerodynamics, and pocket construction for longer distances. Good enough to become an Ironman World Champion, as Frederik Van Lierde impressively demonstrated in 2013. To make this suit as versatile as possible, we use the same materials, pockets, and padding as our Free long-distance suits for this model.

Well-ventilated SpeedFreak material on the front of the top.
Velocity mesh material on the back for wind tunnel-tested speed on the bike.
30 cm long YKK zipper on the back.
FreeAero 2 pockets are aerodynamically optimized and do not interfere while swimming.
Soft arm openings reduce chafing.
Leg part made of Instadry Speed material absorbs very little water and is the basis for fast swim times.
KISS tri-padding for comfort on the bike and while running.
2 small pockets at the hips for storing nutrition while running.