Bicoque helmet in production produced by Armory Smith, Ukraine based on a XV century historical example in the Deutsches Historisches Museum in Berlin, Inv. Nr. W 1012 : r ArmsandArmor Escape Disc Giant Bicycles Official site Co op Cycles Brand Guide: Great Value E Bikes From REI Upway Talon 4 AHR RUN M3 Modular Flip Up Helmet Full Face Dual Visor DOT Motorcycle Bike XL M3 Matte Black Andy Caps Custom Moulded Surfing Helmets