Fly Racing Street Revolt Space Creep Helmet. Construction: Durable and lightweight polycarbonate / ABS shell. Dual-density EPS liner - two layers of EPS, one softer, one slightly harder, combine to provide a more progressive impact absorption for different levels of impact. Two shell sizes.. Vision: Optically superior clear face shield with anti-fog coating and durable hard coating for scratch resistance. 100% UVA/B protection up to 400 nanometers. Shield lock provides peace of mind, shield will remain closed in all conditions. Easy shield changes - quick, secure and tool-less removal and installation. Comfort / Liner: Qwick-Dry™ comfort liner and cheeks pads. Hydrophilic liner absorbs sweat and is perforated to provide plenty of ventilation.