The S-Works Prevail 3 helmet is perfect for cyclists who appreciate the comfort and thermoregulation features offered by superior ventilation. It is the ultimate all-purpose helmet that excels in hot conditions, strenuous climbs, and mountain stages. In a refined search to find the limits of ventilation, Specialized has eliminated the central foam 'jumpers' that block air from the center, effectively creating channels that increase surface area by 24.5% compared to the S-Works Prevail II. Ventilation: The new S-Works Prevail 3 has the largest ventilation zone of any helmet ever made. When a he...