The HJ-37 RST Pinlock® Ready Shield is designed specifically for the HJC RPHA 91 helmet. This shield features a distinctive mirrored finish achieved through a specialized coating process in a high-vacuum chamber with metallic compounds, giving it a unique rainbow appearance. This unique coating not only adds a captivating aesthetic touch but also significantly enhances surface reflectivity, providing additional eye protection. Additionally, the shield is prepared to accommodate a Pinlock® anti-fog lens insert (sold separately), effectively preventing fog buildup and ensuring clear visibility in various weather conditions. Crafted from durable materials, the HJ-37 RST shield offers enhanced scratch resistance and UV protection, contributing to both safety and comfort during rides. Its easy installation process allows riders to quickly upgrade their helmets, making it an essential addition for those seeking optimal performance and clarity on the road.