The lightweight Abus AirBreaker claims closed helmet aero gains & open design ventilation. Riding the new road helmet, I'm impressed by its fit & comfort.
Abus AirBreaker helmet review
ABUS Airbreaker Ultralight Aerodynamics Road Bike Helmet Men Aero Cycling Helmet Triathlon Racing Ultra-light and highly protective
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ABUS AirBreaker Road Helmet
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Abus Airbreaker helmet review - BikeRadar
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Review: Abus AirBreaker helmet
Review: Abus AirBreaker helmet
Bike helmet, AirBreaker, for road cycling
Review: Abus AirBreaker road helmet blends aero, lightweight & great cooling - Bikerumor
Abus Airbreaker Helmet - First look & review
Abus Airbreaker helmet review
ABUS AirBreaker - Test 4 Outside