Kali Protectives' Enduro Helmet uses Composite Fusion Plus, a mix of carbon fiber, fiber glass and polycarbonate to increase strength and reduce weight. The result is an extended coverage helmet with a CPSC rating and a 300 gram weigh in. For adequate airflow, the Avana Enduro channels venting through twenty openings, allowing cooling air in the front and heated air out the back. The strap system is easy to use, and is designed to avoid irritation or migration when riding hard. The Kali Protectives Avana Enduro Helmet comes in sizes X SmallSmall, SmallMedium, and MediumLarge with multiple color options.