Castelli’s Free Donna Tri Singlet is great for all distances, especially when you need extra speed through aerodynamics and more pocket space. Hydrophobic Instadry Speed Fabric slips through the water and wind with minimal moisture absorption, plus the Velocity mesh back is wind-tunnel tested for faster bike splits. Large pockets let you store food and extra clothing, yet remain hydro and aerodynamic. No-sew under-arm construction eliminates chafing while micro clip hooks, Giro3 arm elastic, and Giro3 back elastic keep things locked down during the swim and run.
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