Alpinestars Sm3 Radium Helmet

A full face street helmet built for sport and commuting riders who want solid protection with a modern aerodynamic profile and clear visibility on daily rides.

Key Features

• Streamlined shell shape to reduce drag and buffeting

• Large eyeport for wide and clear field of vision

• Anti scratch clear visor with tool free removal

• Removable and washable interior padding

• Moisture wicking liner for heat and sweat control

• EPS multi channel airflow system for better ventilation

• Speaker pockets compatible with most communication systems

• Emergency release cheek pads for added safety

Materials and Construction

• Lightweight polycarbonate composite outer shell

• Multi density EPS impact absorber

• Removable anti microbial comfort liner

Safety

• ECE certified

• DOT certified

Fit Guidance

• Intermediate oval fit

• Secure double D ring chin strap

• True to size, choose the size you normally wear in street helmets