The S-Works Prevail II is the most complete lightweight race helmet weve ever made. It combines incredible ventilation with superlative aerodynamic design & an ultra-lightweight construction in order to achieve the best all-around performance available on the market today. Patented Energy Optimized Multi-Density EPS construction helps to manage impact energy. Patented Aramid-Reinforced Skeleton provides internal EPS support. Ultra-light Mindset II micro-dial fit system with height adjustability for the perfect fit. Mega Mouthport optimizes cooling & sweat evaporation. Aerodynamic design. 4th Dimension Cooling System with deep internal channels large vents & aligned exhaust ports. Thin soft & lightweight 4X Dry Lite webbing won’t stretch out with sweat or water. Tri-Fix web splitter for enhanced comfort & ease of strap adjustments. Instrap webbing system for ultra-light construction & security. Gutter Action brow pad design for increased comfort & sweat management. Reflective decals for increased visibility in low-light conditions. Patented clip-on visor included.