Troy Lee Designs A3 Helmet – Intake White X-Large/2X-LargeTroy Lee Designs A3 Helmet Intake White X Large 2X Large. Head of the class A3 leaves nothing to chance by setting the modern standard in protection and fit as demanded by Troy Lee Designs athletes. Equipped with Mips protection the co molded EPP EPS design features sixteen vents to optimize airflow making for a helmet that is so comfortable it practically disappears on your head. Co molded EPP and EPS with Mips B Series rotational impact protection