The HJC FG-17 uses HJC's Premium Integrated Matrix (PIM) method of shell construction, incorporating three different materials; carbon fibre, aramid fibres and fibreglass. This creates a unique woven blend that produces a shell both remarkably strong, and noticeably lighter. As a race-ready helmet, the FG-17 is also packed full of cutting edge technologies such as a SilverCool interior, a RapidFire visor system and a unique air channelling ventilation system. This 'ACS' ventilation system works to flush both heat, and humidity, up and out of the helmet. All helmets are supplied with a clear visor as standard. This also features Advanced Channelling Ventilation System (ACS) SilverCool moisture wicking interior, Pinlock ready visor, Pinlock Max Vision visor insert comes as standard, double D retention system, fully removable and washable interior and glasses groove to accommodate glasses reducing temple pressure.