Advanced Polycarbonate Compound (APC) shell ACS - advanced channeling ventilation system: Three intake vents and five exhaust ports for maximum airflow Improved mouth vent enhances defogging and breathability Pinlock ready HJ-38 visor provides 99% UV protection, anti-scratch coated Photochromic ShadeX visor compatible (sold separately) Moisture wicking liner is quick drying and odor resistant Emergency quick-release cheek pads for added safety SMART HJC Bluetooth ready (Bluetooth unit sold separately) Pinlock(R) HJ-38 Lens Insert [https://helmethouse.com/pinlock/hj-38-lens-insert.html#sku-0915-9300-00] (DKS466) Standards: Snell M2025D & DOT FMVSS 218 Approved Weight: 3.315 lbs / 1521 grams (approx, based on size medium solid color) The HJC i11 Helmet delivers a race-inspired fit with the aerodynamic design and ventilation serious sport riders demand. Engineered to reduce lift and drag at high speeds, it features a lightweight shell, enhanced airflow, and a snug interior made for long rides or quick sprints.With DOT and Snell M2025D certification, you get peace of mind with every twist of the throttle. The i11 also includes a photochromic-ready visor system and emergency quick-release cheek pads for added safety. It's sport-focused, tech-ready, and designed for all-out riding.