Fly Racing Street Sentinel Recon HelmetThe Fly Sentinel is asleek and well-designed helmet constructed with many premium features.Features: Durable and lightweight polycarbonate blend shell 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. 2 shell sizes Optically superior clear face shield with anti-fog coating and durable hard coating for scratch resistance Tinted drop-down inner sun shield Face shield lock provides piece of mind that shield will remain closed in all conditions Easy face shield changes Quick-Dry comfort liner and cheek pads Speaker pockets built into the EPS for Bluetooth/Comsystems Removable chin curtain 6 adjustable intake vents 5 exhaust vents Removable air guide directs airflow upwards across face shield DOT and ECE Note: Ships with clear face shield. Other options sold separately.