Design Philosophy Light in weight, but not light in features. The new SingleTrack Helmet incorporates Koroyd® panels in high impact areas provide increased energy absorption. Koroyd® 3D formed Koroyd® inserts for enhanced airflow and improved energy absorption in an incredibly lightweight package. This creates the most breathable and lightweight helmets on the market while also providing superior impact protection over standard construction. Airflow A road helmet that's been designed with airflow in mind, the large vents maintain a linear flow of air to maximise breathability and comfort. Helmet Crash Replacement Scheme If you're unfortunate enough to be involved in an accident that causes damage to your Endura helmet, our Helmet Crash Replacement Scheme will reduce the cost of replacing your helmet with the same model or nearest model.