Uvex ultrasonic race helmet this uvex ultrasonic race helmet is designed for sportive racers who take value about comfort and aerodynamics optimum ventilation thanks to the air channels which help keep your head cooler when riding the helmet offers an excellent fit height and width adjustment of the uvex ias 3d fit system guarantees the perfect fit in all situations cycle helmets excellent fit thanks tot ias 3d system lightweight air channels uvex branding blackdk grey