Alpinestars SM3 Radium ECE06/DOT Motorcycle Helmets Engineered specifically for MX, Enduro, and off-road riding, the SM3 Helmet integrates cutting-edge innovations to enhance user comfort and provide elite-level impact protection. ✅Advanced Shell & Construction Technological Shell Design: Features a thermo-injected shell with a specialized polymer blend and variable thickness for the perfect balance of weight and safety. Lightweight Performance: * ECE Weight: 1430g (Size Medium). DOT Weight: 1460g (Size Medium). Multi-Density EPS: Utilizes 5 EPS inner parts with 4 distinct densities to effectively manage volume and impact distribution. Eco-Friendly Comfort: The comfort liner is crafted from recycled materials, reducing the environmental carbon footprint. ✅Key Protection Technologies Rotational Force Mitigation: Includes a patented low-friction coating on the inner EPS liner. This acts as a "slip plane" to mimic cerebrospinal fluid, reducing brain injury risks from oblique impacts. Patented Visor Release: The visor is designed to detach with a specific amount of force, significantly reducing stress on the rider's neck during a crash. Enhanced Chin Bar Safety: Optimized shell thickness in the chin area exceeds standard homologation requirements for superior impact performance. Emergency Release System (ERS): Equipped with removable 3D contoured cheek pads for safe helmet removal by medical staff during emergencies. Secure Fastening: 25mm soft textile chin strap with Stainless Steel D-rings for a reliable and comfortable fit. ✅Ventilation & Rider Comfort Maximized Airflow: Features a high-performance cooling system with 10 air inlets and 7 exhaust ports. Hydration Integration: Smart hydration tube channels are integrated directly into the cheek pads for mid-ride convenience. Customizable Fit: The crown and cheek pads are available in various thicknesses as genuine spare parts to tailor the fit to the rider's head. ✅ ✅Compliance & Standards Global Certification: The SM3 conforms to both DOT certification and ECE 22.06 homologation for worldwide use. Optimized Surfaces: Both inner and outer surfaces are specifically engineered to minimize the dangerous effects of oblique impacts. Helmet Size Chart Size Circumference (CM) Circumference (IN) Hat Size (IN) XS 53–54 20 7/8 – 21 1/4 6 5/8 – 6 3/4 S 55–56 21 5/8–22 6 7/8–7 M 57–58 22 1/2–22 3/4 7 1/8–7 1/4 L 59–60 23 1/8– 23 1/2 7 3/8–7 1/2 XL 61–62 23 7/8–24 1/4 7 5/8–7 3/4 XXL 63–64 24 5/8–25 7 7/8–8 /* Inter Font Setup (included to ensure consistency if the platform doesn't load it) */ @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap'); :root { --primary-color: #009879; /* Teal */ --secondary-color: #e0f2f1; /* Light Hover Color */ --header-color: var(--primary-color); --key-column-color: #f7f7f7; --zebra-color: #f3f3f3; } /* Container for horizontal scroll on mobile - THIS IS THE RESPONSIVE KEY */ .responsive-table-container { overflow-x: auto; border-radius: 12px; box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1); margin-bottom: 2.5rem; } /* --- Custom Table Styles --- */ .sizing-table { border-collapse: collapse; /* Ensures the table is wide enough to be readable, triggering horizontal scroll on small devices */ min-width: 500px; width: 100%; background-color: white; font-size: 0.9em; font-family: 'Inter', sans-serif; } .sizing-table th, .sizing-table td { padding: 12px 15px; border: 1px solid #dddddd; text-align: center; white-space: nowrap; } /* Header Row */ .sizing-table thead th { background-color: var(--header-color); color: white; font-weight: 700; text-transform: uppercase; font-size: 0.875rem; text-align: center; border-bottom: 3px solid #000; border-right: 1px solid rgba(255, 255, 255, 0.2); } /* First Column (Size) - Key identifier */ .sizing-table th:first-child, .sizing-table td:first-child { background-color: var(--key-column-color); font-weight: 600; color: #1f2937; text-align: center; border-right: 2px solid var(--primary-color); } /* Zebra striping */ .sizing-table tbody tr:nth-of-type(even) { background-color: var(--zebra-color); } /* Hover effect */ .sizing-table tbody tr:hover { background-color: var(--secondary-color); transition: background-color 0.2s; cursor: default; } /* Ensure the h3 title is left-aligned and styled correctly */ .text-xl.font-semibold.text-gray-800.mt-6.mb-3.text-left { font-size: 1.25rem; font-weight: 600; color: #1f2937; }
