This race-inspired design is known for its incredible fit and tremendous value. It has many similar features to the S-Works Prevail, like the Tri-Fix webbing system and 4th Dimension Cooling, granting the Propero III incredible performance at a more attainable price. For helmets sold in the U.S. and Canada: Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. Sistema Hairport FSL II fa;cilmente ajustable con 4 posiciones diferentes y microajuste. Easy-adjust, HairPort FSL II fit system with four height positions and micro-adjustable dial. La matriz de composite permite crear un mejor sistema de ventilacion para un mejor enfriamiento. Correas 4x DryLite que repelen el sudor y la humedad Sistema Tri-Fix de regulacion y ajuste de las correas, ma;s comodo, fa;cil. Adhesivos reflectantes para una mayor visibilidad para los automovilistas en condiciones de poca luz.