The Type B-5 winter flying helmet was developed for the U.S. Army Air Corps, Material Division at Wright Field in 1933. The cap incorporated several new design features to benefit the comfort of the pilot. Adjusting cords around the binding edge insured a snug fit around the pilot's head. A chin strap with a chin cup replaced the typical under chin straps of other helmets. This eliminated the chafing and choking effect of the under chin strap. Finally, a high arch on the back of the helmet also eliminated chafing on the back of the wearer's neck.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.