Technical Specification: ? External shell: Aerodynamic, moulded in EIRT (Energy Impact Resistant Thermoplastic) ? Internal shell: moulded in differentiated density EPS ? Inner: breathable, hypoallergenic liners, fully removable and washable. ? Removable lower wind stop and nose guard ? Ventilation: all air-vents are adjustable. Air-vents on the chin, an air-vent on the upper part of the shell, rear extractor ? Visor: scratch-resistant and rapid release, suitable for use with Pinlock Systems? Original. Extra Wide Vision. Note: Twister Full Face Helmets will come with Pinlock Systems? Original Anti Fog Film Included. ? Internal scratch-resistant sun shield ? Visor mechanism: does not require the use of tools ? Retention system: equipped with a practical quick release buckle for micro metric adjustment. ? Bluetooth: compatible ? Homologation: ECE 22-05