This helmet is available in three size ranges. The S size is from 53 - 56 cm, the M size from 56 - 59 cm, and the L size from 59 - 63 cm. It has a PC top shell and PC bottom shell. The construction combines a PC shell and EPS in - molding technology. There are 10 vents for ventilation. It is equipped with a removable injection visor. The spirals fitting system allows for an adjustable fit, and it comes with removable pads. The helmet uses nylon webbing, an ITW buckle, and a Tri - Splitter. Additionally, it has a removable LED. It is certified under CPSC 1203, CE EN1078, NTA 8776, and GB24429, which ensures it meets relevant safety standards.