casco hjc i70 watuHjc I70 Watu Helmet The i70 is a modern and stylish sport touring helmet made from HJC's advanced polycarbonate material. The full shell is significantly more compact and lighter than its predecessor, the IS 17. The i70 features a retractable internal sun visor with a new easy to use lever. The upper vents optimize airflow through internal and external air channels via the external exhaust vent with an aerodynamic spoiler. SPECIFICATIONS SIZES Cheek