The S1 PRO is the helmet for the real sportsperson. Research in the wind tunnel means that the S1 PRO has top-speed aerodynamics (upward lift = 0!) and makes it extremely quiet - only 85 dB(A) at 100 km/h.
The Pinlock® Visor with finger tabs which is supplied as standard guarantees simple operation and freedom from condensation thanks to its double glazing technology. The helmet shell consists of S.T.R.O.N.G. fibre, a special glass fibre reinforced duroplastic matrix, and is produced in two helmet shell sizes.