Experience the ultimate in safety and comfort with the Alpinestars SM5 Sail Helmet, part number 8306823-2387-XL. Designed for serious riders, this helmet features a lightweight outer shell made from advanced impact-resistant thermoplastic, ensuring durability without compromising on comfort. The helmet is designed to fit securely while providing excellent ventilation through strategically placed air inlets and exhaust ports, keeping you cool during intense rides. The SM5 helmet includes integrated hydration tube channels in the cheek pads for convenience. Its innovative design minimizes the effects of oblique impacts and includes a patented visor release system that ensures safety during unexpected events. With a removable comfort liner treated with SILVERPLUS? anti-bacterial fabrics, you can enjoy a fresh and dry experience every time. The helmet meets both DOT certification and ECE homologation standards, making it a reliable choice for riders worldwide. Features: * Lightweight outer shell made from advanced impact-resistant thermoplastic. * Visor directs air into ports for enhanced airflow. * Integrated hydration tube channels in cheek pads for convenience. * Minimized effects of oblique impacts with engineered inner and outer surfaces. * Soft EPS foam side shell protects collarbone during crashes. * Wider soft textile chin strap for optimal safety and comfort. * Multiple density inner liner for enhanced impact absorption. * Emergency release system and removable cheek pads for easy helmet removal. * Patented visor release system ensures safe visor detachment. * Removable comfort liner with SILVERPLUS? anti-bacterial fabrics. * Removable and washable anti-microbial liner. * Stainless steel D-rings for a secure fit. * Maximized ventilation with multi-air inlets and exhaust ports.