The Stilo ST5 R Zero Carbon Rally WL helmet has an all new shell design specifically to allow for integration with the ground breaking Stilo 'WL' wireless communication system. Being a Stilo 'Zero' helmet it has been designed for ultimate weight saving while exceeding the ultra stringent FIA 8860-2018 requirements for safety.Designed specifically for use with the Stilo 'WL' wireless communication system, although they are perfectly compatible with all hard wired Stilo DG and WRC series amplifiersStrongest and lightest full face rally intercom helmet on the marketAdjustable Microphone: Magnetic-dynamic noise-cancelling microphone. Supplied with spacers to move the microphone position closer to the driver s mouth.Earmuffs: Offer excellent isolation from external noises and contain the intercom speakers. The pressure on the head from the earmuffs can be adjusted by changing the special foam rubber pads positioned between the earmuff and the helmet.Drinks System Preparation: Optional drink