The S-Works Prevail is the ultimate lightweight racing helmet， combining great ventilation， aerodynamic design， and ultra-light construction for the best all-around performance.

• Patent-pending， Dual-Density EPS optimizes impact performance
• Patented Aramid-reinforced Inner Matrix for ultra-light construction and energy management
• Mega Mouthport optimizes cooling and sweat evaporation
• 4th Dimension Cooling System with deep internal channels， massive vents and aligned exhaust ports
• Instrap webbing system for ultra-light construction and security
• Reflective decals for added nighttime visibility
• Complies with one or more of the following safety standards for bicycle helmets: CPSC， SNELL B90A， CE and AS/NZS

size 54-62 cm circumferences