Hjc Helmets Cs-R2 Seca Snow Mc3 Xsm. Advanced Polycarbonate Composite Shell: Lightweight, superior fit and comfort using advanced CAD technology. RapidFire Shield Replacement System: Quick, secure, tool-less removal and installation. Optically Superior Faceshield: 95% UV protection. Advanced Ventilation System: Adjustable forehead and chin vents, and two rear exhaust vents. Plush, Nylex Interior: Crown and cheek pads are removable and washable.