Aerodynamics redefined Multi position design for optimal aerodynamics regardless of the angle of the head Forced Air cooling technology for a clever ventilation system and optimal head temperature Aerodynamics Flowstraps, flutter-free and skin friendly Eyewear port: Aerodynamics bracket at the back for glasses with temple channels ZOOM Ace fine 3D-adjustement system with handy dial for personalized fit. Ponytail compatible S=51-55cm / 260g M=52-57cm / 270g L=57-62cm / 290g
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