LS2 Helmets Metro Firefly Modular Motorcycle Helmet with Sunshield (White, Medium) Twin Shield System drop down sunshield is operated by a cable slider for smooth and dependable sun protection Removable plates on chin open MX-style ventilation for the long hot rides Secure full metal latch and DOT approved quick-release chin strap is easy to open with a gloved hand The DOT approved Metro is homologated as both a full face and an open face helmet by ECE 22.28 Ultra-light, strong yet flexible shell using LS2's proprietary Kinetic Polymer Alloy (KPA)