ITEM TITLE :- SA-1 Steelbird Mat Black With Orange Full Face Helmet Clear Visor L Size 600mm , SUITABLE FOR :- Motorcycle , 1 The helmet with NACA Duct air flow technology, this air flow system is also used in aircraft's and super cars , 2 The double NACA inlets above the shield allow the entry of the large volume of air inside the helmet to refresh and dehumidify the interior , 3 The NACA inlets on the back of the helmet allow quick extraction of the stale air , MATERIAL :- NA , PART NUMBER :- NA , Size : L Size ,