Choose the right foam for your dome. Pro-tec's Certified Helmet combines a lightweight, comfortable EPS foam with a super strong ABS shell to offer up protection you can trust instread of ending up concussed. Injection molded EPS foam lining ABS shell, Ventilated holes for airflow Woven chin strap with buckle fasten CPSC 1203/ASTM 1492/ CE EN 1078 Certified