HJC CS-R1 Paradox Full Face Helmet Small | Blue The HJC CS-R1 Paradox is made with an Advanced Polycarbonate Composite Shell:Lightweight, superior fit and comfort using advanced CAD technology. Rapid-Fire Shield Replacement System: Quick, secure, tool-less shield removal and installation. Optically Superior Face Shield:95% UV protection. Advanced Ventilation System: Adjustable forehead and chin vents, and two rear exhaust vents.