Sixsixone Evo Wired Downhill Helmet. With a fiberglass/composite shell, a Coolmax moisture wicking removable liner and an interior channeling to aid ventilation, this helmet is suitable for BMX and DH. Full helmet Venting System: The Full Helmet Venting System, or FHVS, is a system designed to give maximum airflow by linking channels and vents to create a vortex of airflow pushing warm air out of the helmet allowing cooler air to keep you cool. Panorama Eye Port: The Panorama full view eye port is designed to give maximum peripheral vision and allow any goggles to fit without interference. Fiberglass: The benefits of a fiberglass shell come from the ability to tailor the construction to meet the needs of consumers with lighter weight, and stiffer construction. The chin bar on a helmet is one of the key areas where having extra layers of fiberglass can drastically stiffen the shell of the helmet, to make a safer product. Coolmax fabric is the performance fabric that includes an effective fiber-based moisture management system. The system can move perspiration away from the body, and through the fabric, where it can evaporate quickly, allowing the wearer to feel cooler and more comfortable. Neck Brace Compatible. Specifications:- Weight: 2.4 lb. . tradeinn Bikeinn