The Arai SK-5 is made with the Complex-Laminate-Construction and equired with a specially tough cotton inside feed.he fully fulfils the requirements of the K-98 SNELL Norm and guarantees thus for a Top prize achievement relation.The weight and the technical data are absolutely comparable with the GP-6 and GP-6 S.it is simply the helmet for the Kartsport.SNELL/FIA K 2010