One of the first protective helmets of the French Air Force was manufactured by the Paris-based company ROOLD, founded in 1911. The helmet achieved considerable distribution among a majority of conventional air units and was a welcome prey even with enemy pilots. The users of this helmet counted a number of Czechoslovak legionary pilots. The body is made of glued cork, covered with waxed, brown lacquered canvas. Thanks to its shape, the helmet provided partial head protection from impacts. It was often supplemented with a face mask to protect the pilot from bad weather. Brass holes were cut on the ears to allow better communication in the aircraft. This example was captured by German pilots after the downing of a French fighter in 1918.