The K-3 SV is a great choice for all riders wanting a safe, quality product with sophisticated modern design. HIR-TH (high resistant thermoplastic resin) outer shell Two outer shells and four EPS sizes for the most accurate fit; shell and EPS inner shell dimensions optimized using Finite element method (fem) analysis. IVS (integrated ventilation system) with wide ducts hollowed into the EPS shell optimized with the help of wind tunnel testing (4 front vents and 2 rear extractors). Utilizes the new XQRS (extra quick release system) for the tool-free shield replacement in seconds. Updated 2020 model and visor, GT4 MaxVision visor and Pinlock (included in the box).