Attack the trail with confidence in the Answer AR1 Sweep Helmet a sharp-looking lid that delivers awesome protection without breaking the bank. It features an injection molded polycarbonate and ABS shell with a sculpted dual-density EPS liner Expanded polystyrene (EPS) is a rigid, energy absorbing foam. In the helmet industry, EPS is the most common means of energy management to protect the brain. Generic EPS is often referred to as “Styrofoam” (a trademarked name owned by the Dow Chemical Company). Premium helmet producers utilize multi-density EPS liners to balance comfort, safety and performance. to absorb impacts. Multiple vents keep the air flowing freely to prevent overheating while the removable and washable liner keeps your ride fresh every time. Features: Injection molded polycarbonate and ABS shell Sculptured, dual-density, EPS impact absorbing liner Multiple air intakes and exhaust vents to keep air flowing Removable, washable cheek pads and liner Meets or exceeds ECE 22.05 The ECE 22.05 (Economic Commission for Europe) standard is quite a bit younger than the current DOT standard, and in many ways offers a more comprehensive battery of testing than its American cousin. ECE standards test for safety features that can contribute to avoiding an accident altogether, such as the optical quality of approved face shields and safety factors not directly related to impact, such as shell rigidity. Unlike the DOT, every ECE 22.05 certified helmet model must actually be tested against the standard by an independent lab before it is available for sale with an ECE sticker. and D.O.T. FMVSS 218 safety standards