Men's 2026 Castelli Free Sanremo 3

The Men's Castelli Free Sanremo 3 Tri Suit (2026 model) is Castelli's flagship high-end one-piece triathlon suit, a true evolution of the iconic Sanremo platform—optimized for long-distance racing in hot conditions, such as full Ironman or scorching 70.3 events.

Available in both short-sleeve and sleeveless versions, this premium suit prioritizes aerodynamics, ventilation, and heat management. Key features include CFD-optimized fabric placement and seam construction to minimize drag (with groundbreaking aero gains from engineered ribbed fabric on sleeves and shoulders in the short-sleeve variant), lightweight and highly breathable main body fabrics for superior moisture wicking and cooling, Velocity mesh panels for exceptional airflow, and the signature internal neck pocket for loading ice cubes to lower core temperature during extreme heat (ideal for races like Kona). The innovative Sanremo-style full front zipper allows complete opening for ventilation, easier nature breaks, and quick transitions; it includes the proven KISS Tri seat pad for long-ride comfort, dual rear pockets for nutrition, and a race-fit cut that supports unrestricted movement across swim, bike, and run without compromise.

A top-tier choice for serious triathletes seeking elite speed, thermal regulation, and all-day comfort in demanding warm-weather racing—refined over years for pro-level performance.