Helmet with In-Mould structure with internal cushioning (EPS), has 11 openings for air circulation, internal Fresh-Air ventilation channels specially designed for optimal cooling, breathable dual-density pads, Easy-Fit adjustment system, One-Hand cervical adjustment with dial and removable visor by means of two lateral laces. Product: Hull Size: 54-58 Openings: 11 MATERIAL: POLYCARBONATE Manufacturing: In-Mould Model: ROCK Weight (g ±3%): 300