casco stilo ventiFrom a design perspective, Stilo has revised the microphone boom geometry and introduced a new, slimmer boom to improve visibility without compromising rigidity. The new shape captures a cleaner voice. All new Stilo Venti WRC helmets, both in carbon fibre and fibreglass versions, have been designed to be used with the WL key, which once plugged into the helmet port, allows wireless connection to the WL 10 intercom control unit.