The minimalist design of the bluegrass super bold helmet doesnrsquot mean it has any fewer of the indispensable features needed for extreme performance from its sturdy abs shell to its gravity occipital lock occipital retention system which can be adjusted with one hand and its internal ventilation network the super boldrsquos efficiency leaves you free to concentrate on the pleasure of riding another big plus are the three shell sizes each with a wide range of adjustment meaning it is s