GT6F - Astone Helmets High end floating system,increase air density 4 Locker design of shield,avoid it to be opened during high speed 5 Can add up PinLock anti-fog lens 6 Hidden sun visor 7 Removable and washable inner lining 8 Use low sensitivity cloth for inner lining 9 Use light reflecting material,riding safer at night 10 Metal buckles 11