Alpinestars SM3 Solid ECE06/DOT Motorcycle Helmets

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Alpinestars SM3 Solid ECE06/DOT Motorcycle Helmets The Alpinestars SM3 helmet is a masterpiece of engineering, designed to provide off-road riders with a superior balance of safety , ventilation, and lightweight performance. Utilizing advanced polymer technology and patented safety systems, it meets the highest global protection standards. Key Features and Advanced Shell ✅ Thermo-Injected Shell: Constructed with a specialized polymer blend and variable thickness to optimize impact protection while maintaining a lightweight profile. Weight Specifications: The medium size (M) weighs approximately 1430g for ECE versions and 1460g for DOT versions. Rotational Acceleration Protection: Features a patented low-friction coating on the inner EPS liner, acting as a "slip plane" to reduce rotational forces during oblique impacts, mimicking the brain's natural defenses. Maximized Ventilation: Engineered with 10 intake ports and 7 exhaust ports to ensure high levels of heat transfer and constant airflow. Patented Visor Release: A unique system designed to release the visor with a pre-determined force, significantly reducing potential neck strain during a crash. Structural Construction and Ergonomics ✅ Multi-Density EPS Liner: Incorporates 5 internal EPS parts with 4 distinct densities to manage impact energy effectively across different zones. Customizable Fit: Features interchangeable crown and cheek pads available in various thicknesses, allowing riders to tailor the fit to their specific head shape. Hydration Integration: Integrated channels within the cheek pads allow for the seamless installation of a hydration tube. Eco-Friendly Interior: The comfort liner is manufactured using recycled materials, reducing the product's environmental carbon footprint. Surface Engineering: Both inner and outer surfaces are specifically contoured to deflect and minimize the effects of oblique impact energy. Superior Protection and Safety Standards ✅ Optimized Chin Bar: Features a reinforced structure and optimized shell thickness that exceeds standard homologation requirements for chin-area impact performance. Emergency Release System (ERS): Equipped with removable 3D contoured cheek pads that allow for safe and easy helmet removal by medical personnel in the event of an accident. Secure Fastening: Utilizes high-grade stainless steel D-rings and a 25mm soft textile chin strap for a secure and comfortable fit. Global Certification: Fully conforms to both ECE 2206 homologation and DOT certification for legal use worldwide /* Inter Font Configuration */ @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap'); :root { --primary-color: #009879; --secondary-color: #f0fdfa; /* Tailwind teal-50 */ --header-color: #0d9488; /* Tailwind teal-600 */ --key-column-color: #f9fafb; /* Tailwind gray-50 */ } body { font-family: 'Inter', sans-serif; -webkit-font-smoothing: antialiased; } /* Container and Header Styles */ .table-header-title { font-weight: 700; text-transform: uppercase; font-size: 0.85rem; letter-spacing: 0.05em; color: #0d9488; margin-bottom: 0.75rem; padding-left: 0.25rem; } .responsive-table-wrapper { position: relative; overflow-x: auto; border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); border: 1px solid #e5e7eb; background-color: white; } /* Table Styling */ .sizing-table { border-collapse: separate; border-spacing: 0; width: 100%; font-size: 0.875rem; } .sizing-table th, .sizing-table td { padding: 1rem; text-align: center; border-bottom: 1px solid #e5e7eb; white-space: nowrap; } .sizing-table thead th { background-color: var(--header-color); color: white; font-weight: 600; text-transform: uppercase; font-size: 0.75rem; border-bottom: 2px solid var(--primary-color); } /* Sticky First Column for Mobile Optimization */ .sizing-table th:first-child, .sizing-table td:first-child { position: sticky; left: 0; background-color: var(--key-column-color); font-weight: 700; z-index: 10; border-right: 2px solid #0d9488; } .sizing-table thead th:first-child { z-index: 20; background-color: var(--header-color); } /* Hover & Zebra Striping */ .sizing-table tbody tr:last-child td { border-bottom: none; } .sizing-table tbody tr:hover td { background-color: var(--secondary-color); } /* Visual Badge for Size Labels */ .size-label { display: inline-flex; align-items: center; justify-content: center; min-width: 2.5rem; padding: 0.25rem 0.5rem; background-color: #f3f4f6; color: #111827; border-radius: 4px; font-weight: 700; } /* Mobile Touch Target Adjustment */ @media (max-width: 640px) { .sizing-table th, .sizing-table td { padding: 0.875rem 0.75rem; } } 📏Size Chart Measure the circumference of your head approximately 1 inch above your eyebrows. Measurement Conversions INTL SIZE HEAD CIRCUMFERENCE (CM) HEAD CIRCUMFERENCE (IN) XS 53 - 54 20.8 - 21.2 S 55 - 56 21.6 - 22.0 M 57 - 58 22.4 - 22.8 L 59 - 60 23.2 - 23.6 XL 61 - 62 24.0 - 24.4 XXL 63 - 64 24.8 - 25.2 Show more